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Résumés Année 2001

"Thia-, mercapto- and thiamercaptocalix[4]arenes : synthesis, structural analysis and coordination chemistry"

M. W. HOSSEINI, Calixarenes, Eds J. Vicens, Z. Asfari, J. Harrowfield, V. Böhmer, Kluwer, 2001, 110-129.

"Controlling the formation of discrete complexes or 1-D directional coordination network by the binding ability of anions"

A. JOUAITI, V. JULLIEN, M. W. HOSSEINI, J.-M. PLANEIX, A. DE CIAN, Chem. Commun., 2001, 1114-1115.(download .pdf)

Abstract: Based on the coordination ability of ClO4-, BF4- and Cl- anions, a switch from discrete octahedral Co(II) complexes to a directional 1-D network was demonstrated using organic tectons based on a pyridine unit as a monodentate coordination site and a terpyridine moiety as a tridentate coordination pole. Whereas with non coordinating anions discrete mononuclear complexes were obtained, for Cl- anion a directional 1-D coordination network was obtained in the presence of CoCl2 under self-assembly conditions. The X-ray study on single-crystal revealed the centrosymmetric packing of 1-D networks.

"Double stranded interwound infinite linear silver coordination network"

B. SCHMALTZ, A. JOUAITI, M. W. HOSSEINI, A. DE CIAN, J. Chem. Soc., Chem. Commun., 2001, 1242-1243. (download .pdf)

Abstract: Upon self-assembly of a bismonodentate ligand based on two pyridine units interconnected at the para position by a hexaethylene glycol fragment using ester junctions and Ag+ cation, a double stranded interwound infinite linear network was obtained in the crystalline phase. The formation of this unprecedented architecture is a result of the loop type conformation of the connector segment which forms a pseudo crown ether. The loop surounds the metal catio which is linearly coordinated to two pyridines belonging to consecutive units, thus forming the 1-D network.

"Design of 2-D hydrogen bonded molecular networks using pyromellitate dianion and cyclic bisamidinium dication as complementary tectons"

O. FELIX, M. W. HOSSEINI, A. DE CIAN, J. Solid State Sciences, 2001, 3, 789-793.

Abstract: Using both H-bonding and ionic interactions, a dicationic tecton composed of two cyclic amidinium units and bearing four H-bond donor sites was self-assembled in the crystalline phase into a 2-D molecular networks in the presence of pyromellitate dianion.

"Design and structural analysis of interpenetrated 3-D coordination networks by self-assembly processes using tetrapyridinoocyclophane an d silver cations"

C. KLEIN , Z. E. GRAF, M. W. HOSSENI and A. De CIAN, New J. Chem, 2001, 25, 207-209. (download .pdf)

Abstract: A [1,1,1,1]metacyclophane blocked in the 1,3-alternate conformation and bearing four pyridine units leads under self-assembly conditions in the crystalline phase to the formation of a fourfold int erpenetrated 3-D coordination network in the presence of silver cation. The 3-D net is generated through the bridging by linearly coordinated silver cation of consecutive tectons presenting a pseudo tetrahedral arrangement of four coordination sites.