Syntheses, Structures, and Properties of Two New Isostructural Complexes Based on 1-((Benzotriazol-1-yl)methyl)-1H-1,3-Imidazole and 1,4-Benzenedicarboxylate

Abstract

Self-assemblies of Co(II) or Zn(II) salts with 1-((benzotriazol-1-yl)methyl)-1H-1,3-imidazole (bmi) and 1,4-benzenedicarboxylic acid (1,4-H 2 bdc) gave rise to two new isostructural complexes, [Co(bmi) 2 (bdc)] n (1) and [Zn(bmi) 2 (bdc)] n (2). Single-crystal X-ray diffraction determination shows that both complexes possess similar chain structure, in which two carboxylate groups of each bdc 2-anion coordinate to metal ions with chelating mode and the bmi groups hang at both sides of the chains with monodentate mode. Complexes 1 and 2 are further extended to 3-D supramolecular structures by p-p interaction and intermolecular force. IR spectra, PXRD patterns, fluorescent properties and thermostability of both complexes have been investigated.

Syntheses, structures and properties of two new isostructural zinc(II) complexes based on 1-[(benzotriazol-1-yl)methyl]-1H-imidazole

“…17 complexes and in a bridging mode in ten complexes (Duan et al, 2010a,b;Meng et al, 2009;Zhou et al, 2011;Wang & Sun, 2011;An et al, 2008;Hu et al, 2012;Huang et al, 2014;Zhang et al, 2015). In this work, the bmi ligands coordinate to the Zn II ion only via imidazole atom N1 in a monodentate mode, even though there are three potential N-atom donors in bmi.…”

“…Thus, there is an obvious advantage in atom N1 coordinating to metal atoms and bmi can be used as a monodentate ligand. Under the appropriate reaction conditions, bmi can act as a bridging ligand (with atoms N1 and N5 as donors), forming one-, two-and three-dimensional structures (Zhang et al, 2015;Zhou et al, 2011).…”

“…Owing to the strong coordination ability and diversities of their coordination modes, N-heterocyclic organic compounds, such as imidazole, triazole, benzimidazole, benzotriazole and their derivatives, have been used extensively as ligands for the construction of complexes with intriguing structures and potential applications in fluorescent materials, nonlinear optical (NLO) and ferroelectric materials, dielectric materials and the pharmaceutical industry (Wang et al, 2010;Dou et al, 2016;Castillo et al, 2016;Brede et al, 2016). In recent years, many researchers, including our group, have focused their attention on the design and synthesis of metal-organic complexes based on 1-[(benzotriazol-1-yl)methyl]-1H-imidazole (bmi), since it has three potential N-atom donors and can coordinate to metal ions in monodentate or bridging coordination modes in the construction of complexes (An et al, 2008;Zhang et al, 2015). Up to now, more than 20 complexes constructed from the bmi ligand have been reported, ranging from zero-dimensional complexes to two-dimensional networks with a rich structural diversity.…”

“…Up to now, more than 20 complexes constructed from the bmi ligand have been reported, ranging from zero-dimensional complexes to two-dimensional networks with a rich structural diversity. In previous work, through the self-assembly of the unsymmetrical bmi ligand with ZnCl 2 , Zn(NO 3 ) 2 , ZnSO 4 and Zn(Ac) 2 (Ac is acetate), in the presence or absence of benzene-1,4-dicarboxylic acid (H 2 bdc) or NaN 3 , a series of complexes, namely [ZnCl 2 -(bmi) 2 ], [Zn(NO 3 (Duan et al, 2010b;Meng et al, 2009;Zhang et al, 2015), have been synthesized. In order to enrich the variety and number of complexes In addition, the elemental analysis, IR spectra, PXRD patterns and fluorescence properties of both complexes have been investigated.…”

Two new isostructural mercury(II) complexes involving the N-heterocyclic 1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole ligand: syntheses, structures and properties

“…In recent years, many researchers have focused their attention on the design and synthesis of metal-organic complexes based on the 1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole (bmi) ligand (An et al, 2008;Zhang et al, 2015), since it possesses several interesting characteristics. First, it has three potential N-atom donors and so can coordinate to metal ions in monodentate or bridging coordination modes in the construction of complexes.…”