Premium
Complexes of nickel(II) and copper(II) with 1,2,4‐triazole‐3‐carboxylic acid and of cobalt(III) with 3‐amino‐1,2,4‐triazole‐5‐carboxylic acid
Author(s) -
Liu Feng-Yi,
Zhou Dong-Mei,
Zhao Xiao-Lan,
Kou Jun-Feng
Publication year - 2017
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/s2053229617012943
Subject(s) - chemistry , hydrogen bond , triazole , carboxylic acid , tetrahydrate , supramolecular chemistry , carboxylate , 1,2,3 triazole , transition metal , coordination complex , 1,2,4 triazole , copper , molecule , medicinal chemistry , stereochemistry , crystallography , metal , crystal structure , polymer chemistry , organic chemistry , catalysis
Because of their versatile coordination modes and strong coordination ability for metals, triazole ligands can provide a wide range of possibilities for the construction of metal–organic frameworks. Three transition‐metal complexes, namely bis(μ‐1,2,4‐triazol‐4‐ide‐3‐carboxylato)‐κ 3 N 2 , O : N 1 ;κ 3 N 1 : N 2 , O ‐bis[triamminenickel(II)] tetrahydrate, [Ni 2 (C 3 HN 3 O 2 ) 2 (NH 3 ) 6 ]·4H 2 O, (I), catena ‐poly[[[diamminediaquacopper(II)]‐μ‐1,2,4‐triazol‐4‐ide‐3‐carboxylato‐κ 3 N 1 : N 4 , O ‐[diamminecopper(II)]‐μ‐1,2,4‐triazol‐4‐ide‐3‐carboxylato‐κ 3 N 4 , O : N 1 ] dihydrate], {[Cu 2 (C 3 HN 3 O 2 ) 2 (NH 3 ) 4 (H 2 O) 2 ]·2H 2 O} n , (II), (μ‐5‐amino‐1,2,4‐triazol‐1‐ide‐3‐carboxylato‐κ 2 N 1 : N 2 )di‐μ‐hydroxido‐κ 4 O : O ‐bis[triamminecobalt(III)] nitrate hydroxide trihydrate, [Co 2 (C 3 H 2 N 4 O 2 )(OH) 2 (NH 3 ) 6 ](NO 3 )(OH)·3H 2 O, (III), with different structural forms have been prepared by the reaction of transition metal salts, i.e. NiCl 2 , CuCl 2 and Co(NO 3 ) 2 , with 1,2,4‐triazole‐3‐carboxylic acid or 3‐amino‐1,2,4‐triazole‐5‐carboxylic acid hemihydrate in aqueous ammonia at room temperature. Compound (I) is a dinuclear complex. Extensive O—H…O, O—H…N and N—H…O hydrogen bonds and π–π stacking interactions between the centroids of the triazole rings contribute to the formation of the three‐dimensional supramolecular structure. Compound (II) exhibits a one‐dimensional chain structure, with O—H…O hydrogen bonds and weak O—H…N, N—H…O and C—H…O hydrogen bonds linking anions and lattice water molecules into the three‐dimensional supramolecular structure. Compared with compound (I), compound (III) is a structurally different dinuclear complex. Extensive N—H…O, N—H…N, O—H…N and O—H…O hydrogen bonding occurs in the structure, leading to the formation of the three‐dimensional supramolecular structure.