A pillared framework coordination polymer based on the Cd-3(mu(3)-OH) unit: poly[[mu(4)-5-aminotetrazolato-kappa N-4(1):N-2:N-3:N-4)chlorido-mu(3)-hydroxido-(mu(3)-isonicotinato-kappa N-3:O:O ')- dicadmium(II)] 0.14-hydrate]

作者：Wang, Yao; Guan, Ying-Fang; Liu, Jian-Jun; Huang, Chang-Cang^*

来源：Acta Crystallographica Section C-Structural Chemistry, 2014, 70(10): 983-U234.

DOI：10.1107/S205322961402052X

• crystal structure
• 5-aminotetrazolate
• isonicotinic acid
• bridging ligand
• coordination polymer
• three-dimensional framework

The title coordination polymer, {[Cd-2(CH2N5)(C6H4NO2)-Cl(OH)]center dot 0.14H(2)O}n, (I), was synthesized by the reaction of cadmium acetate and N-(1H-tetrazol-5-yl)isonicotinamide in aqueous ammonia, using hydrochloric acid to adjust the pH. Under hydrothermal conditions, N-(1H-tetrazol-5-yl)isonicotinamide slowly hydrolyzes to form isonicotinic acid (Hisonic) and 5-aminotetrazole (Hatz). The deprotonated form of isonicotinic acid (denoted isonic) acts as a bridging ligand in the structure. The polymer crystallizes in the monoclinic space group C2Im. In the structure, there is one Cd-3(mu(3)-OH) unit of C-s. symmetry, with one of the Cd-II atoms and the O and H atoms located on a mirror plane. The other crystallographically independent CdIT cation is located on an inversion centre. Each edge of the Cd-3(mu(3)-OH) isosceles triangle is bridged by an atz ligand in a mu(1,2) or mu(2,3)/mu(3,4) mode. The Cd-3(mu(3)-OH) units are laced around with a belt of chloride ligands. The belts are further connected into undulating layers via weak inter-belt Cd-Cl bonds. The two organic ligands reside across mirror planes. The construction of a three-dimensional framework is completed by the pillaring isonic ligand. Water molecules partially occupy the voids of the framework.

• 出版日期2014-10
• 单位福州大学