International Summer School PROGRAM - Laboratoire d'Infochimie ...

Variation around charge-assisted H-bonded molecular networks
Sylvie FERLAY, Mir Wais HOSSEINI
LCCO, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France.
ferlay@unistra.fr
Dicationic bisamidinium have been shown to be particularly well adapted to form, when
associated with polycyanometallates, perfectly robust molecular networks, by charge-assisted
H-bonds. In particular, upon combining hexacyanometallate anions [M III (CN)6] 3- (M = Fe, Co,
Cr) or, in certain conditions [Fe II (CN)6] 4-
, with bisamidinium molecules 1, 2, or 3, analogous
2-D networks are obtained in the solid state and have been studied from a structural point of
view (see scheme) [1-5]. With 1 or 2, the formed networks are porous, whereas they are filled
with the propyl chains beard by 3.
R
H H
H H
H H
N
N
N
N
N
N
+ ) ( + HO + ) ( + OH
+ )
( +
N
N
N
N
N
N
H H
H H
H H
1 2 3
CN
NC CN
M
NC CN
CN
+
H
H
N
+ )
N
( + R
N
N
H
H
Scheme: General formation of the two dimensional networks (X-2H + )3[M III (CN)6] 3- 2
(X=1, 2 or 3, and M = Cr, Fe or Co) or Y(3-2H + )3[Fe II (CN)6] 4- 2 (Y=Na, K, Rb, Cs)
The porosity of the formed system has been studied as well as the post synthetic
modification, and also the construction of singular units called "crystals of crystals".[6-8]
[1] S. Ferlay, O. Félix, M.W.Hosseini, J.-M. Planeix, N. Kyritsakas, Chem. Commun. , 2002, 702.
[2] S. Ferlay, V. Bulach, O. Félix, M. W. Hosseini, J-M. Planeix, N. Kyritsakas, CrystEngComm, 2002, 447.
[3] P. Dechambenoit, S. Ferlay, M.W.Hosseini, J.-M. Planeix, N. Kyritsakas, New J. Chem., 2006, 30, 1303.
[4] P. Dechambenoit, S. Ferlay, M. W. Hosseini, N. Kyritsakas J. Am. Chem. Soc., 2008, 130, 17106.
[5] P. Dechambenoit, S. Ferlay, M. W. Hsseini, N. Kyritsakas Chem. Comm., 2009, 1559-1561.
[6] P. Dechambenoit, S. Ferlay,, N. Kyritsakas and M. W. Hosseini Chem. Commun., 2010, 868-870.
[7] P. Dechambenoit, S. Ferlay,, N. Kyritsakas, M. W. Hosseini , Chem. Commun., 2009, 6798 - 6800.