title: Two new isostructural mercury(II) complexes involving the N-heterocyclic 1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole ligand: syntheses, structures and properties.
abstract: The unsymmetrical N-heterocyclic ligand 1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole (bmi) has three potential N-atom donors and can act in monodentate or bridging coordination modes in the construction of complexes. In addition, the bmi ligand can adopt different coordination conformations, resulting in complexes with different structures due to the presence of the flexible methylene spacer. Two new complexes, namely bis{1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole-κN3}dibromidomercury(II), [HgBr2(C10H9N5)2], and bis{1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole-κN3}diiodidomercury(II), [HgI2(C10H9N5)2], have been synthesized through the self-assembly of bmi with HgBr2or HgI2. Single-crystal X-ray diffraction shows that both complexes are mononuclear structures, in which the bmi ligands coordinate to the HgIIions in monodentate modes. In the solid state, both complexes display three-dimensional networks formed by a combination of hydrogen bonds and π-π interactions. The IR spectra and PXRD patterns of both complexes have also been recorded.
authors.affiliation: Department of Chemical Engineering, Henan Polytechnic Institute, 473009 Nanyang, Henan, People's Republic of China.
authors.forename: Xu
authors.initials: X
authors.lastname: Wei
authors.affiliation: Department of Chemical Engineering, Henan Polytechnic Institute, 473009 Nanyang, Henan, People's Republic of China.
authors.forename: Jian Hua
authors.initials: JH
authors.lastname: Li
authors.affiliation: Department of Chemical Engineering, Henan Polytechnic Institute, 473009 Nanyang, Henan, People's Republic of China.
authors.forename: Qiu Ying
authors.initials: QY
authors.lastname: Huang
authors.affiliation: The College of Chemistry and Molecular Engineering, Zhengzhou University, 450001 Zhengzhou, Henan, People's Republic of China.
authors.forename: Xiang Ru
authors.initials: XR
authors.lastname: Meng
keywords: 1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole; IR; N-heterocyclic ligand; PXRD; bromide; crystal structure; iodide; mononuclear mercury(II) complexes