Premium
Synthesis and crystal structures of two coordination polymers and a binuclear cadmium(II) complex containing 3‐ and 4‐aminobenzoate ligands
Author(s) -
Zhou DongMei,
Zhao XiaoLan,
Liu FengYi,
Kou JunFeng
Publication year - 2015
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229615012371
Subject(s) - supramolecular chemistry , stacking , hydrogen bond , chemistry , crystallography , crystal structure , molecule , stereochemistry , organic chemistry
Due to their wide range of coordination modes and versatile conformations when binding to metal atoms, multicarboxylate ligands are of interest in the design of metal–organic frameworks (MOFs). Three Cd II complexes, namely catena ‐poly[diammonium [[chloridocadmium(II)]‐di‐μ‐chlorido‐[chloridocadmium(II)]‐bis(μ‐3‐aminobenzoato)‐κ 3 N : O , O ′;κ 3 O , O ′: N ]], {(NH 4 )[CdCl 2 (C 7 H 6 NO 2 )]} n , (I), catena ‐poly[[[aquacadmium(II)]‐bis(μ‐4‐aminobenzoato)‐κ 3 N : O , O ′;κ 3 O , O ′: N ] monohydrate], {[Cd(C 7 H 6 NO 2 ) 2 (H 2 O)]·H 2 O} n , (II), and di‐μ‐acetato‐κ 4 O : O ′‐bis[(4‐aminobenzoato‐κ 2 O , O ′)(2,2′‐bipyridine‐κ 2 N , N ′)cadmium(II)], [Cd 2 (CH 3 COO) 2 (C 7 H 6 NO 2 ) 2 (C 10 H 8 N 2 ) 2 ], (III), with different stuctural forms are reported. Complex (I) has a one‐dimensional ladder structure, with strong N—H...O and weak N—H...Cl hydrogen bonds linking the cations and anions in the three‐dimensional supramolecular structure. Complex (II) has a one‐dimensional chain structure. Extensive O—H...O and N—H...O hydrogen bonds between the anionic ligands and the solvent water molecules and π–π stacking interactions between the centroids of the benzene rings lead to the three‐dimensional supramolecular structure. Complex (III) is a binuclear molecule which is extended into a three‐dimensional supramolecular structure via strong N—H...O and weak C—H...O hydrogen bonds.