Synthesis, Characterization and Crystal Structure Determination of a Hepta-coordinated Cadmium(II) Complex with Thiocyanato-bridges

A Silver(I) Coordination Polymer Based on a Schiff Base Ligand: Synthesis, Crystal Structure and Luminescence Properties

“…The luminescence properties of some metal-organic compounds based on Schiff base ligands and d 10 metal ions have been investigated previously [24,25]. Herein, the properties of 1 were studied in the solid state at room temperature.…”

A series of metal–organic frameworks based on polydentate Schiff-base ligands derived from benzil dihydrazone: synthesis, crystal structures and luminescent properties

“…{[AgL 1 2 ]BF 4 } n (2). The way was similar to that described for the preparation of 1, except that AgBF 4 (58 mg, 0.30 mmol) was used instead of AgClO [AgL 2 (NO 3 )] n (5). An ethanol solution (9 mL) of L 2 (125 mg, 0.30 mmol) and AgNO 3 (51 mg, 0.30 mmol) in CH 3 CN solution (40 mL) were mixed and stirred at room temperature for 0.5 h. The solution was filtrated and left for slowly evaporating at room temperature to obtain yellow crystals suitable for X-ray structure determination.…”

“…Polydentate Schiff base ligands with two symmetrically related pyridyl coordination capabilities derived from benzil dihydrazone are excellent ligands allowing us to probe systematically the effect of modifications to the ligand backbone through which we are attempting to control the precise topography, or microarchitecture, of the arrays. [2][3][4][5][6][7] In the solid state, such ligands show a monohelix due to the constraint of the rotation around the C-C bond. Upon coordination, the rotating freedom of two -N-N-bonds on the ligands is also restrained, and the ligands can be locked in a twist conformation.…”

“…Therefore, the ligands L 1 and L 2 are particularly attractive for making coordination polymer structures through the strong and directional bonding interactions of pyridyl N donors. As part of our studies of coordination polymers derived from polydentate diazine Schiff-base ligands via self-assembly, [5][6][7]12 herein we report the synthesis and characterization of a family of interesting coordination polymers using ligands L 1 and L 2 (Scheme 1). For L 1 , the coordination polymers referred to include 2D polymeric array {[AgL 1 ]ClO 4 } n (1) featuring trinuclear metallocyclic rings, 1D structures {[AgL 1 2 ]BF 4 } n (2) and {[AgL 1 (NO 3 )](CH 3 CH 2 OH)} n (3), and 2D structure {[ZnL 1 2 (NCS) 2 ]CH 3 CN} n (4) containing tetranuclear metallacyclic rings.…”

“…For L 1 , the coordination polymers referred to include 2D polymeric array {[AgL 1 ]ClO 4 } n (1) featuring trinuclear metallocyclic rings, 1D structures {[AgL 1 2 ]BF 4 } n (2) and {[AgL 1 (NO 3 )](CH 3 CH 2 OH)} n (3), and 2D structure {[ZnL 1 2 (NCS) 2 ]CH 3 CN} n (4) containing tetranuclear metallacyclic rings. For L 2 , we have synthesized four 1D chain coordination polymers: [AgL 2 (NO 3 )] n (5), {[FeL 2 2 Cl 2 ]$CH 3 CN} n (6), {[MnL 2 2 (NCS) 2 ]$(CH 3 CH 2 OH)} n (7) and [ZnL 2 2 (NCS) 2 ] n (8).…”