J. S. Miller and A. J. Epstein, Molecule-based Magnets: An Introduction, ACS Symposium Series, vol.644, pp.1-13, 1996.

J. M. Coey, Magnetism and Magnetic Materials, 2010.

V. Skumryev, S. Stoyanov, Y. Zhang, G. Hadjipanayis, D. Givord et al., Nature, pp.850-853, 2003.

P. G-tlich and H. A. Goodwin, Spin Crossover in Transition Metal Compounds I?III, Topics in Current Chemistry

. Springer-verlag, , pp.233-235, 2004.

S. Decurtins, P. ;-g-tlich, C. P. Köhler, H. Spiering, A. Hauser et al., Chem. Phys. Lett, vol.105, pp.4405-4412, 1984.

A. Caneschi, D. Gatteschi, R. Sessoli, A. L. Barra, L. C. Brunel et al., J. Am. Chem. Soc, vol.113, pp.141-143, 1991.

A. Caneschi, D. Gatteschi, N. Lalioti, C. Sangregorio, R. Sessoli et al., Angew. Chem., Int. Ed, vol.40, pp.163-206, 2001.

W. Linert and M. Verdaguer, Molecular Magnets Recent Highlights, 2003.

G. Rogez, B. Donnio, E. Terazzi, J. Gallani, J. Kappler et al., Adv. Mater, vol.21, pp.4323-4333, 2009.

D. Gatteschi, A. Cornia, M. Mannini, and R. Sessoli, Inorg. Chem, vol.48, pp.3408-3419, 2009.

D. Gatteschi, R. Sessoli, J. M. Villain, and . Nanomagnets, , 2006.

M. N. Leuenberger, D. Loss, J. Tejada, E. M. Chudnovsky, E. Barco et al., Nanotechnology, vol.410, pp.1751-1756, 2001.

F. Torres, J. M. Hernández, X. Bohigas, and J. Tejada, Appl. Phys. Lett, vol.77, pp.3248-3250, 2000.

J. R. Friedman, M. P. Sarachik, J. Tejada, R. Ziolo, L. Thomas et al., Phys. Rev. Lett, vol.76, pp.145-157, 1996.

W. Wernsdorfer and R. Sessoli, Science, vol.284, pp.133-135, 1999.

R. E. Winpenny, J. Chem. Soc, pp.1-10, 2002.

P. J. Ferko, S. M. Holmes, and . Curr, Inorg. Chem, vol.3, pp.172-193, 2013.

X. Wang, C. Avendañoa, and K. R. Dunbar, Chem. Soc. Rev, vol.40, pp.3213-3238, 2011.

K. S. Pedersen, J. Dreiser, J. Nehrkorn, M. Gysler, M. Schau-magnussen et al., J. Chem. Commun, vol.47, pp.6918-6920, 2011.

K. Qian, X. Huang, C. Zhou, X. You, X. Wang et al., J. Am. Chem. Soc, vol.135, pp.13302-13305, 2013.

S. Ohkoshi, H. Tokoro, T. Hozumi, Y. Zhang, K. Hashimoto et al., J. Am. Chem. Soc, vol.128, pp.222-228, 2001.

S. Ohkoshi, Y. Hamada, T. Matsuda, Y. Tsunobuchi, and H. Tokoro, Chem. Mater, vol.20, pp.3048-3054, 2008.

N. Ozaki, H. Tokoro, Y. Hamada, A. Namai, T. Matsuda et al., Eur. J. Inorg. Chem, vol.38, pp.3031-3042, 2005.

S. Wang, J. Zuo, H. Zhou, H. J. Choi, Y. Ke et al., Angew. Chem. Int. Ed, vol.43, pp.5251-5253, 2004.

D. Li, S. Parkin, G. Wang, G. T. Yee, R. Clérac et al., J. Am. Chem. Soc, vol.128, pp.4903-4905, 2005.

M. Nihei, M. Ui, M. Yokota, L. Han, A. Maeda et al., Angew. Chem. Int. Ed, vol.44, pp.4103-4105, 2004.

I. Boldog, F. J. Munoz-lara, A. B. Gaspar, M. C. Munoz, M. Seredyuk et al., J. Am. Chem. Soc, vol.48, pp.2463-2470, 2007.

C. P. Berlinguette, A. Dragulescu-andrasi, A. Sieber, J. R. Galan-mascaros, H. Del et al., Angew. Chem. Int. Ed, vol.126, pp.11704-11708, 2004.

M. Hilfiger, M. Chen, T. Brinzari, T. Nocera, M. Shatruk et al., Angew. Chem., Int. Ed, vol.49, pp.424-425, 1999.

J. M. Herrera, V. Marvaud, M. Verdaguer, J. Marrot, M. Kalisz et al., Angew. Chem. Int. Ed, vol.43, pp.5119-5123, 2004.

S. Kanegawa, C. Duan, N. Hoshino, F. Iijima, G. N. Newton et al., Angew. Chem. Int. Ed, vol.4, pp.6361-6364, 2012.

A. Mondal, Y. Li, P. Herson, M. Seuleiman, M. Boillot et al., Chem. Commun, vol.48, pp.7682-7685, 2012.

R. Lescouezec, J. Vaissermann, C. Ruiz-perez, F. Lloret, R. Carrasco et al., Angew. Chem. Int. Ed, vol.42, pp.2523-2530, 2000.

P. Atkins and . De-paula, J. Physical Chemistry, 2006.

A. Mondal, Y. Li, M. Seuleiman, M. Julve, L. Toupet et al., J. Am. Chem. Soc, vol.135, p.1665, 2013.

Y. Sekine, M. Nihei, R. Kumai, H. Nakao, Y. Murakami et al., Chem. Commun, 2014.

C. P. Slichter and H. G. Drickamer, J. Chem. Phys, vol.56, pp.2142-2160, 1972.

M. Mannini, F. Pineider, C. Danieli, F. Totti, L. Sorace et al., Angew. Chem. Int. Ed, vol.468, pp.2842-2845, 1998.

M. Cavallini, I. Bergenti, S. Milita, J. C. Kengne, D. Gentili et al.,

S. Bonhommeau, G. Molnar, A. Galet, A. Zwick, J. A. Real et al., Angew. Chem. Int. Ed, vol.27, pp.4069-4073, 2005.

I. Imaz, F. Luis, C. Carbonera, D. Ruiz-molina, and D. Maspoch, Chem. Commun, pp.1202-1204, 2008.

E. Coronado, J. R. Galan-mascaros, M. Monrabal-capilla, J. Garcia-martinez, P. Pardo-ibanez et al., Angew. Chem. Int. Ed, vol.19, pp.5706-5714, 2003.

D. Demus, J. W. Goodby, G. W. Gray, and H. Spiess, Handbook of Liquid Crystals, 1998.

C. Tschierske, . Annu, . Rep, . Prog, . Chem et al., Angew. Chem. Int. Ed, vol.97, pp.1495-1513, 2001.

C. Tschierske, J. W. Goodby, I. M. Saez, S. J. Cowling, V. Görtz et al., Angew. Chem. Int. Ed, vol.36, pp.1-108, 1930.

S. Kumar, S. Laschat, A. Baro, N. Steinke, F. Giesselmann et al., Macromol. Rapid Commun, vol.35, pp.378-396, 2006.

P. Collings, Introduction to Liquid Crystals, Chemistry and Physics, 1997.

C. Tschierske, Curr. Opin. Colloid Interface Sci, vol.7, pp.355-370, 2002.

A. M. Levelut, M. Clerc, X. B. Zeng, G. Ungar, and M. Impéror-clerc, (b) Impéror-Clerc, M, vol.24, pp.370-376, 1998.

S. Kutsumizu, . Curr, and S. Opin-;-diele, Curr. Opin. Colloid Interface Sci, vol.6, pp.333-342, 2002.

V. Percec, C. M. Mitchell, W. D. Cho, S. Uchida, M. Glodde et al., J. Am. Chem. Soc, vol.126, pp.3324-3334, 2002.

A. M. Giroud, U. T. ;-m-ller-westerhoff, A. Giroud-godquin, P. M. Maitlis, J. L. Serrano et al., Mol. Cryst. Liq. Cryst, vol.41, pp.375-402, 1977.

B. Donnio, D. W. Bruce, . Struct, . Bond, C. Piguet et al., J. Am. Chem. Soc, vol.95, pp.1233-1236, 1914.

M. Ghedini, I. Aiello, A. Crispini, A. Golemme, M. La-deda et al., Chem. Rev, vol.250, pp.1373-1390, 2006.

Y. Galyametdinov, V. Ksenofontov, A. Prosvirin, I. Ovchinnikov, G. Ivanova et al., Angew. Chem. Int. Ed, vol.40, pp.4269-4271, 2001.

M. S. Haddad, M. W. Lynch, W. D. Federer, and D. N. Hendrickson, Inorg. Chem, vol.20, pp.123-131, 1981.

S. Hayami, K. Danjobara, K. Inoue, Y. Ogawa, N. Matsumoto et al., Adv. Mater, vol.16, pp.869-872, 2004.

S. Hayami, N. Motokawa, A. Shuto, N. Masuhara, T. Someya et al., Inorg. Chem, vol.46, pp.7692-7694, 2007.

M. Seredyuk, A. B. Gaspar, V. Ksenofontov, Y. Galyametdinov, J. Kusz et al., J. Am. Chem. Soc, vol.130, pp.1431-1439, 2008.

A. B. Gaspar, M. Seredyuk, R. ;-g-tlich, and . Coord, Chem. Rev, vol.253, pp.2399-2413, 2009.

T. Fujigaya, D. L. Jiang, T. Aida, Y. H. Lee, Y. Komatsu et al., Inorg. Chem. Commun, vol.125, pp.1498-1500, 2003.

M. Seredyuk, A. B. Gaspar, V. Ksenofontov, S. Reiman, Y. Galyametdinov et al., Chem. Mater, vol.18, pp.10232-10245, 2006.

O. Roubeau, A. Colin, V. Schmitt, R. Clérac, P. Grondin et al., Angew. Chem. Int. Ed, vol.43, pp.5184-5195, 2004.

P. Grondin, D. Siretanu, O. Roubeau, M. Achard, and R. Clérac, Inorg. Chem, vol.51, pp.5417-5426, 2012.

W. Wernsdorfer, N. Aliaga-alcade, D. N. Hendrickson, and G. Christou, Nature, vol.416, pp.406-409, 2002.

E. Terazzi, C. Bourgogne, R. Welter, J. Gallani, D. Guillon et al., Angew. Chem., Int. Ed, vol.47, pp.2708-2722, 2008.

D. Siretanu, , 2011.

A. J. Herbert, A. Trans-;-blumstein, L. Platel, G. W. Gray, B. Jones et al., Mol. Cryst. Liq. Cryst, vol.63, pp.1127-1161, 1953.

M. Gonidec, F. Luis, Á. Vílchez, J. Esquena, B. David et al., Angew. Chem. Int. Ed, vol.49, pp.1623-1626, 2010.

. Chapter, Generalities and Context

K. Kuroiwa, T. Shibata, A. Takada, N. Nemoto, and N. Kimizuka, J. Am. Chem. Soc, vol.126, pp.2016-2021, 2004.

T. Fujigaya, D. Jiang, and T. Aida, Chem. Asian J, vol.2, pp.106-113, 2007.

B. S. Luisi, K. D. Rowland, and B. Moulton, Chem. Commun, pp.2802-2804, 2007.

C. Gandolfi, C. Moitzi, P. G. Schurtenberger, G. G. Morgan, and M. Albrecht, J. Am. Chem. Soc, vol.130, pp.14434-14435, 2008.

W. Li, B. Li, Y. Wang, J. Zhang, S. Wang et al., J. Am. Chem. Soc, vol.46, pp.32-33, 2009.

R. Inglis, J. Bendix, T. Brock-nannestad, H. Weihe, E. K. Brechin et al., Chem. Sci, 2010.

C. Schlegel, E. Burzurí, F. Luis, F. Moro, M. Manoli et al., Mol. Cryst. Liq. Cryst. Sci. Technol. A, vol.16, pp.145-157, 1995.

, Mn 12 -based SMMs: Versatile target for

, 2.3. Chemistry of Mn 12 -based complexes

, Functionalization of Mn 12 -based SMMs with strongly lipophilic groups

, Single crystal X-ray analysis of the model compound, p.53

, Elemental and thermo-gravimetric analyses

, Description of the molecular packing inside the mesophase

, Functionalization of Mn 12 -based SMMs by grafting a mesomorphic promoter through a flexible spacer

, Elemental and thermo-gravimetric analyses

, Small angle X-ray scattering (SAXS) investigations

, Summary of section II

, 2.1. Crystallographic data for

T. Lis, . Acta, . Cryst, A. Caneschi, D. Gatteschi et al., J. Am. Chem. Soc, vol.36, pp.1804-1816, 1980.

R. Sessoli, D. Gatteschi, A. Caneschi, M. A. Novak, L. Thomas et al., Nature, vol.365, pp.145-157, 1993.

G. Rogez, B. Donnio, E. Terazzi, J. Gallani, J. Kappler et al., Adv. Mater, vol.21, pp.4323-4333, 2009.

L. Bogani and W. Wernsdorfer, Nature Materials, vol.7, pp.179-186, 2008.

A. Cornia, A. C. Fabretti, M. Pacchioni, D. Bonacchi, A. Caneschi et al., Angew. Chem. Int. Ed, vol.42, pp.1237-1248, 2003.

I. Ababei, R. Lecren, L. Li, Y. Wernsdorfer, W. Roubeau et al., Dalton Trans, vol.39, pp.4744-4746, 2010.

K. Binnemans, Physical Properties of Metallomesogens, Inorganic Materials Series: Molecular Materials, pp.61-141, 2010.

N. E. Chakov, S. Lee, A. G. Harter, P. L. Kuhns, A. P. Reyes et al., J. Am. Chem. Soc, vol.128, pp.6975-6989, 2006.

C. J. Milios, A. Vinslava, W. Wernsdorfer, S. Moggach, S. Parsons et al., J. Am. Chem. Soc, vol.129, pp.2754-2755, 2007.

R. Blagg, C. A. Muryn, E. J. Mcinnes, F. Tuna, R. E. Winpenny et al., Angew. Chem., Int. Ed, vol.50, pp.1457-1465, 2009.

R. Bagai and G. Christou, Chem. Soc. Rev, vol.38, pp.1011-1026, 2009.

H. H. Zhao, C. P. Berlinguette, J. Bacsa, A. V. Prosvirin, J. K. Bera et al., Inorg. Chem, vol.43, pp.1359-1369, 2004.

H. J. Eppley, H. Tsai, N. Vries, K. Folting, G. Christou et al., Angew. Chem., Int. Ed, vol.117, pp.42-45, 1995.

M. Soler, P. Artus, K. Folting, J. C. Huffman, D. N. Hendrickson et al., Inorg. Chem, vol.40, pp.4902-4912, 2001.

S. Hill, N. Anderson, A. Wilson, S. Takahashi, K. Petukhov et al., Inorg. Chem. Commun, vol.24, pp.208-211, 2005.

M. A. Halcrow, Chem. Soc. Rev, vol.42, pp.83-86, 1994.

D. Ruiz, Z. M. Sun, B. Albela, K. Folting, J. Ribas et al., Angew. Chem., Int. Ed, vol.37, pp.300-302, 1998.

M. Soler, W. Wernsdorfer, Z. M. Sun, J. C. Huffman, D. N. Hendrickson et al., Phys. Rev. Lett, p.257201, 2002.

M. J. Aubin, Z. Sun, I. A. Guzei, A. L. Rheingold, G. Christou et al., Chem. Commun, pp.2239-2240, 1997.

. Chapter, Functionalization of Single Molecule Magnets: Towards Liquid Crystalline Phases II, p.107

P. Gerbier, D. Ruiz-molina, N. Domingo, D. B. Amabilino, J. Vidal-gancedo et al., Bull. Korean Chem. Soc, vol.134, p.6548, 2001.

Y. Wang, W. Li, S. Zhou, D. Kong, H. Yang et al., Angew. Chem., Int. Ed, vol.47, pp.2604-2605, 2003.

N. E. Chakov, W. Wernsdorfer, K. A. Abboud, D. N. Hendrickson, G. D. Christou et al., , p.2243, 2003.

N. E. Chakov, K. A. Abboud, L. N. Zakharov, A. L. Rheingold, D. N. Hendrickson et al., Polyhedron, vol.22, pp.1759-1763, 2003.

N. Tirelli, F. Cardullo, T. Habicher, U. W. Suter, and F. Diederich, J. Chem. Soc. Perkin Trans, vol.2, pp.193-198, 2000.

R. Deschenaux, B. Donnio, and D. Guillon, New J. Chem, vol.31, pp.1064-1073, 2007.

R. W. Date, E. Fernandez-iglesias, K. E. Rowe, J. M. Elliott, D. W. Bruce et al., , 1914.

F. Camerel, R. Ziessel, B. Donnio, and D. Guillon, New J. Chem, vol.30, pp.135-139, 2006.

T. Zhang, S. Liu, D. G. Kurth, and C. F. Faul, Adv. Funct. Mater, vol.19, pp.642-652, 2009.

Y. Molard, F. Dorson, V. Cîrcu, T. Roisnel, F. Artzner et al., Angew. Chem. Int. Ed, p.3351, 2010.

A. S. Mocanu, M. Amela-cortes, Y. Molard, V. Cîrcu, S. Cordier et al., Angew. Chem., Int. Ed, vol.47, pp.2708-2722, 2008.

M. Gonidec, F. Luis, Á. Vílchez, J. Esquena, D. B. Amabilino et al., Angew. Chem., Int. Ed, vol.49, pp.1-5, 2010.

I. M. Saez, J. W. Goodby, . Struct, and . Bond, , vol.128, pp.1-62, 2008.

D. Siretanu, Univ. of Bordeaux, vol.1, 2011.

A. J. Herbert, A. Trans-;-blumstein, L. Platel, G. W. Gray, B. Jones et al., Mol. Cryst. Liq. Cryst, vol.63, pp.1127-1161, 1953.

R. Sessoli, D. Gatteschi, and R. Sessoli, Mol. Cryst. Liq. Cryst, vol.274, pp.268-297, 1995.

Z. Sun, D. Ruiz, N. R. Dilley, M. Soler, J. Ribas et al., Chem. Commun, pp.1973-1974, 1999.

W. Wernsdorfer, N. Aliaga-alcalde, D. N. Hendrickson, and G. Christou, Nature, vol.416, pp.406-409, 2002.

R. Tiron, W. Wernsdorfer, D. Foguet-albiol, N. Aliaga-alcalde, and G. Christou, Phys. Rev. Lett, p.227203, 2003.

K. Nakamoto, Infrared and Raman Spectra of Inorganic and Coordination Compounds, 1970.

J. Larionova, R. Clérac, B. Boury, J. L. Bideau, L. Lecren et al., J. Mater. Chem, vol.13, pp.795-799, 2003.

J. An, Z. Chen, J. Bian, J. Chen, S. Wang et al., Inorg. Chim. Acta, vol.299, pp.28-34, 2000.

D. Ruiz-molina, P. Gerbier, E. Rumberger, D. B. Amabilino, I. A. Guzei et al., J. Mater. Chem, vol.12, pp.1152-1161, 2002.

L. A. Kushch, V. D. Sasnovskayaa, A. I. Dmitriev, E. B. Yagubskii, O. V. Koplak et al.,

, Dalton Trans. 2012, vol.41, pp.13747-13754

Z. Sun, D. Ruiz, E. Rumberger, C. D. Incarvito, K. Folting et al., Inorg. Chem, vol.37, pp.2127-2146, 1998.

, International Tables for X-Ray Crystallography, vol.II, pp.47-53, 1972.

C. Hammond, The Basics of Crystallography and Diffraction, vol.2, 2001.

T. Nakanishi, M. Morita, H. Murakami, T. Sagara, and N. Nakashima, Chem. Eur. J, vol.8, pp.1641-1648, 2002.

T. Zhang, S. Liu, D. G. Kurth, and C. F. Faul, Adv. Funct. Mater, vol.19, pp.642-652, 2009.

A. F. Terzis, A. G. Vanakaras, D. J. Photinos, A. Crisanti, and L. Leuzzi, Mol. Cryst. Liq. Cryst, vol.352, p.87201, 2000.

A. M. Levelut, J. Malthête, A. J. Collet, and . Physique, , vol.47, pp.351-357, 1986.

S. Kutsumizu, . Curr, and S. Opin-;-diele, c) Impéror-Clerc, M. Curr. Opin. Colloid Interface Sci, vol.6, pp.370-376, 2002.

M. A. Alam, J. Motoyanagi, Y. Yamamoto, T. Fukushima, J. Kim et al., J. Am. Chem. Soc, vol.131, pp.562-567, 2005.

A. M. Levelut, M. Clerc, . Liq, . Cryst, I. Bury et al., J. Am. Chem. Soc, vol.24, pp.95-106, 1998.

J. Kim, M. Hong, J. Ahn, M. Lee, R. G. Sun et al., J. Phys. D: Appl. Phys, vol.44, pp.463-467, 2004.

C. Tschierske, Chem. Soc. Rev, vol.36, 1930.

T. Hatano, T. Kato, K. Goossens, S. Wellens, K. Van-hecke et al., Chem. Commun, vol.17, pp.7643-7650, 2006.

S. Singh, Phys. Rep, vol.324, pp.107-269, 2000.

B. Dardel, D. Guillon, B. Heinrich, R. J. Deschenaux, . Mater et al., Saez, I. M. Appl. Organomet. Chem, vol.11, pp.45-155, 1999.

, 2.3. Structural investigations of molecular {Fe 2 Co 2 } squares

, Fe(CN) 3 ] 2 [Co(bpy) 2 ] 2 }[OTf] 2 ·3H 2 O·3DMF (1), Tp*)

, Fe(CN) 3 ] 2 [Co(diMebpy) 2 ] 2 }(OTf) 2 ?H 2 O?2DMF (2), Tp*)

, Fe(CN) 3 ] 2 [Co(diMebpy) 2 ] 2 }(ClO 4 ) 2 ?2DMF (3), Tp*)

, Fe(CN) 3 ] 2 [Co(diMebpy) 2 ] 2 }(OTs) 2 ?6DMF (4), Tp*)

. Co,

O. Sato, T. Iyoda, A. Fujishima, K. Hashimoto, O. Sato et al., Angew. Chem., Int. Ed, vol.272, pp.2152-2187, 1996.

L. Catala, F. Volatron, D. Brinzei, and T. Mallah, Inorg. Chem, vol.48, pp.3360-3370, 2009.

L. M. Beltran, J. R. Long, J. Rebilly, T. Mallah, S. Struct-;-c)-wang et al., Bonding, Eur. J. Inorg. Chem, vol.38, pp.3031-3042, 2005.

S. Wang, J. Zuo, H. Zhou, H. J. Choi, Y. Ke et al., Angew. Chem., Int. Ed, vol.43, pp.5251-5253, 2004.

D. Li, S. Parkin, G. Wang, G. T. Yee, R. Clérac et al., J. Am. Chem. Soc, vol.128, pp.4903-4905, 2005.

M. Nihei, M. Ui, M. Yokota, L. Han, A. Maeda et al., Angew. Chem., Int. Ed, vol.44, pp.3710-3719, 2004.

C. P. Berlinguette, A. Dragulescu-andrasi, A. Sieber, J. R. Galan-mascaros, H. Güdel et al., Angew. Chem., Int. Ed, vol.126, pp.424-425, 1999.

A. Bleuzen, V. Marvaud, C. Mathonière, B. Sieklucka, and M. Verdaguer, Inorg. Chem, vol.48, pp.3453-3466, 2009.

J. L. Heinrich, P. A. Berseth, J. R. Long, K. K. Klausmeyer, T. B. Rauchfuss et al., Angew. Chem. Int. Ed, vol.37, pp.2705-2711, 1998.

Z. Gu, W. Liu, Q. Yang, X. Zhou, J. Zuo et al., Inorg. Chem, vol.46, pp.6106-6108, 2007.

D. Siretanu, J. A. Kitchen, N. G. White, G. N. Jameson, J. L. Tallon et al., Dalton Trans, vol.50, issue.10, pp.4536-4549, 2006.

D. Li, S. Parkin, G. Wang, G. T. Yee, and S. M. Holmes, Inorg. Chem, vol.45, pp.1951-1959, 2006.

K. Nakamoto, Infrared and Raman Spectra of Inorganic and Coordination Compounds, 5th Ed, 1997.

, Synthesis and characterizations of functionalized molecular {Fe 2 Co 2 } squares in solid state

, Structural investigations of functionalized molecular {Fe 2 Co 2 } squares

, Analytical characterizations of functionalized molecular {Fe 2 Co 2 } squares in diluted solutions ... IV.152 IV.3.1. UV-Vis spectroscopic characterizations 5 and 6 in diluted solutions

, Magnetic properties of 5 and 6 in solutions

, UV-Vis studies in diluted solutions of 5 and 6, IV.5.2. Crystallographic data for 5 and 6

, Magnetic measurements in solid state

, Magnetic measurements in solutions

Y. Zhang, D. Li, R. Clérac, M. Kalisz, C. Mathonière et al., Angew. Chem, vol.122, pp.3840-3844, 2010.

, Angew. Chem., Int. Ed, vol.49, pp.3752-3756, 2010.

D. Siretanu, D. Li, L. Buisson, D. M. Bassani, S. M. Holmes et al., Chem.-Eur. J, vol.17, pp.11704-11708, 2011.

D. Siretanu, Univ. of Bordeaux, vol.1, 2011.

M. Nihei, Y. Sekine, N. Suganami, H. Oshio, M. Nihei et al., J. Am. Chem. Soc, vol.39, pp.3592-3600, 2010.

D. Domínguez-gutiérrez, G. D. Paoli, A. Guerrero-martínez, G. Ginocchietti, D. Ebeling et al., Mol. Cryst. Liq. Cryst, vol.18, pp.3046-3051, 1992.

C. P. Berlinguette, A. Dragulescu-andrasi, A. Sieber, J. R. Galan-mascaros, H. Güdel et al.,

J. Dunbar, . Am, C. P. Berlinguette, A. Dragulescu-andrasi, A. Sieber et al., J. Am. Chem. Soc, vol.126, pp.6104-6116, 2004.

D. Li, R. Clérac, O. Roubeau, E. Harté, C. Mathonière et al., J. Am. Chem. Soc, vol.130, pp.252-258, 2008.

J. Mercurol, Y. Li, E. Pardo, O. Risset, M. Seuleiman et al., Chem. Commun, vol.46, pp.8995-8997, 2010.

D. Li, S. Parkin, G. Wang, G. T. Yee, A. V. Prosvirin et al., Inorg. Chem, vol.45, pp.1951-1959, 2006.

G. R. Desiraju, T. Steiner, and T. Steiner, Crystallogr. Rev, vol.29, issue.1, p.727, 1996.

M. Nihei, M. Ui, N. Hoshino, and H. Oshio, Inorg. Chem, vol.47, pp.6106-6108, 2008.

P. Atkins and . De-paula, J. Physical Chemistry, 2006.

L. R. Snyder, . Chromatogr, S. C. Sci-;-rutan, P. W. Carr, W. J. Cheong et al., J. Trends Anal. Chem, vol.16, pp.293-309, 1978.

C. Reichardt, Selected bond distances (Å) Co(1)-N(1) 2.073(8) Co(2)-N(14) 2.069, vol.3, pp.137-139, 2003.

F. , C(1) 1.900(10) Fe(2)-C(41), vol.1, p.910

F. , C(2) 1.924(11) Fe(2)-C(42), vol.1, p.926

F. , C(3) 1.932(10) Fe(2)-C(43)

). , , vol.92

, C(43)-Fe(2)-C(42)

Y. Zhang, D. Li, R. Clérac, M. Kalisz, C. Mathonière et al., Angew. Chem., Int. Ed, vol.49, pp.3752-3756, 2010.

J. Mercurol, Y. Li, E. Pardo, O. Risset, M. Seuleiman et al.,

. Commun, A. Mondal, Y. Li, M. Seuleiman, M. Julve et al., J. Am. Chem. Soc, vol.46, pp.1653-1656, 2010.

M. Nihei, Y. Sekine, N. Suganami, H. Oshio, M. Nihei et al., J. Am. Chem. Soc, vol.39, pp.3592-3600, 2010.

D. Siretanu, D. Li, L. Buisson, D. M. Bassani, S. M. Holmes et al., Univ. of Bordeaux, vol.17, pp.11704-11708, 2011.

E. Pardo, M. Verdaguer, P. Herson, H. Rousselière, J. Cano et al., Inorg. Chem. Commun, vol.50, pp.4903-4905, 2005.

L. Cao, J. Tao, Q. Gao, T. Liu, Z. Xia et al., Chem. Commun, vol.50, pp.1665-1667, 2014.

D. Li, S. Parkin, G. Wang, G. T. Yee, and S. M. Holmes, Inorg. Chem, vol.45, pp.1951-1959, 2006.

F. Lloret, M. Julve, J. Cano, R. Ruiz-garcía, E. Pardo et al., Inorg. Chim. Acta, vol.361, pp.2322-2324, 2004.

C. P. Berlinguette, A. Dragulescu-andrasi, A. Sieber, H. Güdel, C. Achim et al., J. Am. Chem. Soc, vol.127, pp.6766-6779, 2005.

P. Atkins and . De-paula, J. Physical Chemistry, 2006.

D. Li, R. Clérac, O. Roubeau, E. Harté, C. Mathonière et al., J. Am. Chem. Soc, vol.130, pp.6106-6108, 2008.

P. V. Bernhardt, F. Bozoglián, B. P. Macpherson, M. Martínez, . Coord et al., Chem. Rev, vol.249, pp.2582-2587, 2004.

J. Stöhr and H. C. Siegmann, Magnetism -From Fundamentals to Nanoscale Dynamics, Part III, Polarized Electron and X-Ray Techniques, pp.351-476, 2006.

C. Brouder, J. P. Kappler, E. Beaurepaire, B. Carrière, and . Kappler, Magnetism and Synchrotron Radiation, Editions de Physique, pp.19-32, 1997.

M. L. Baker, Y. Kitagawa, T. Nakamura, K. Tazoe, Y. Narumi et al., Inorg. Chem, vol.52, pp.13956-13962, 2013.

Y. Sekine, M. Nihei, R. Kumai, H. Nakao, Y. Murakami et al.,

C. Cartier-dit-moulin, F. Villain, A. Bleuzen, M. Arrio, P. Sainctavit et al., J. Am. Chem. Soc, vol.122, pp.6653-6658, 2000.

A. Bleuzen, C. Lomenech, V. Escax, F. Villain, F. Varret et al., J. Am. Chem. Soc, vol.122, pp.6648-6652, 2000.

G. Campion, V. Escax, C. Cartier-dit-moulin, A. Bleuzen, F. Villain et al., J. Annex Annex References

G. M. Sheldrick and . Sadabs, Version 2.03; Bruker Analytical X-Ray Systems, 2000.

G. M. Sheldrick and . Cryst, , vol.64, pp.112-122, 2008.

, CrysAlis RED, Version 1.171.32.5; Oxford Diffraction Ltd, 2007.

A. Altomare, M. C. Burla, M. Camalli, G. Cascareno, C. Giacovazzo et al., Spagna R. J. Appl. Cryst, vol.32, pp.115-119, 1999.

A. P. Hammersley, ESRF Internal Report, vol.97, issue.02, 1997.

D. Bruce, D. O'hare, and R. Walton, Molecular Materials, p.378, 2010.

D. Bradshaw, J. B. Claridge, E. J. Cussen, T. J. Prior, and M. J. Rosseinsky, Acc. Chem. Res, vol.38, pp.273-282, 2005.

P. H. Dinolfo and J. T. Hupp, Chem. Mater, vol.13, pp.3113-3125, 2001.

L. Öhrström and K. Larsson, Molecule-based materials, 2005.

J. S. Miller and A. J. Epstein, Molecule-based Magnets: An Introduction, ACS Symposium Series, vol.644, pp.1-13, 1996.

J. M. Coey, Magnetism and Magnetic Materials, 2010.

V. Skumryev, S. Stoyanov, Y. Zhang, G. Hadjipanayis, D. Givord et al., Nature, pp.850-853, 2003.

P. G-tlich and H. A. Good-in, Spin Crossover in Transition Metal Compounds I?III, Topics in Current Chemistry

. Springer-verlag, , pp.233-235, 2004.

S. Decurtins, P. ;-g-tlich, C. P. Köhler, H. Spiering, A. Hauser et al., Chem. Phys. Lett, vol.105, pp.4405-4412, 1984.

A. Caneschi, D. Gatteschi, R. Sessoli, A. L. Barra, L. C. Brunel et al., J. Am. Chem. Soc, vol.113, pp.141-143, 1991.

A. Caneschi, D. Gatteschi, N. Lalioti, C. Sangregorio, R. Sessoli et al., Angew. Chem., Int. Ed, vol.40, pp.163-206, 2001.

W. Linert and M. Verdaguer, Molecular Magnets Recent Highlights, 2003.

G. Rogez, B. Donnio, E. Terazzi, J. Gallani, J. Kappler et al., Adv. Mater, vol.21, pp.4323-4333, 2009.

D. Gatteschi, A. Cornia, M. Mannini, R. Sessoli, N. Tirelli et al., and references wherein. 15. (a), vol.48, pp.193-198, 2000.

R. Deschenaux, B. Donnio, and D. Guillon, New J. Chem, vol.31, pp.1064-1073, 2007.

R. W. Date, E. Fernandez-iglesias, K. E. Ro-e, J. M. Elliott, D. W. Bruce et al., , 1914.

F. Camerel, R. Ziessel, B. Donnio, and D. Guillon, New J. Chem, vol.30, pp.135-139, 2006.

T. Zhang, S. Liu, D. G. Kurth, and C. F. Faul, Adv. Funct. Mater, vol.19, pp.642-652, 2009.

Y. Molard, F. Dorson, V. Cîrcu, T. Roisnel, F. Artzner et al., Angew. Chem. Int. Ed, p.3351, 2010.

A. S. Mocanu, M. Amela-cortes, Y. Molard, V. Cîrcu, S. Cordier et al., Angew. Chem., Int. Ed, vol.47, pp.2708-2722, 2008.

Y. Zhang, D. Li, R. Clérac, M. Kalisz, C. Mathonière et al., J. Am. Chem. Soc, vol.49, pp.11704-11708, 2010.

J. A. Kitchen, N. G. White, G. N. Jameson, J. L. Tallon, S. Brooker et al., Dalton Trans, vol.50, pp.4536-4549, 2006.