Synthesis and structure of a complex of copper(II) bromide with bis(benzotriazol-1-yl)methane

Supramolecular Layer Structures of Mn(II), Co(II), and Cu(II) Complexes with the 3-(1H-Benzotriazol-1-yl)propaneamide Ligand: Metal Coordination vs Hydrogen Bonding

“…As a result, the copper atom displays a trigonal-bipyramidal coordination, where the two benzotriazolyl moieties define the axial positions (configuration index TBPY-5-33). The facile switch between the coordination numbers six and five is typical for copper­(II), and numerous five-coordinated complexes with nitrogen ligands occupying the axial sites have been described. − As in 2 – 4 , the neighboring coordination of an amide moiety and a halogenide ligand is probably supported by a S (6)-type intramolecular N1–H1···Br2 bridge (N1···Br2, 346(1) pm). Two CuBr 2 L fragments are consequently connected to a dimeric complex, featuring a centrosymmetric C 6 Cu 2 N 6 O 2 16-membered ring just like in 2 – 4 .…”

Two zinc(II) coordination complexes based on an asymmetric multidentate ligand: syntheses, structures, selective fluorescence sensing of iron(III) ions and thermal analyses

“…It is well known that structural changes have a great influence on the properties of the final complexes. Therefore, Recently, N-heterocyclic compounds with benzotriazole groups, such as 4,6-bis(1H-1,2,3-benzotriazol-1-yl)-1,3,5-triazin-2-ol (Xie et al, 2004), 1H-triazo[4,5-f][1,10]phenanthroline (Wang et al, 2008), 5,6-dimethylbenzotriazole (Laye et al, 2006), 5,6-dimethoxy-1,2,3-benzotriazole (Biswas et al, 2010), bis(benzotriazol-1-yl)methane (Lider et al, 2007) and di-1H-1,2,3-triazolo[4,5-b][4 0 ,5 0 -i]dibenzo [1,4]dioxin (Denysenko et al, 2012), have been found to be excellent candidates for the preparation of coordination complexes. These benzotriazole derivatives show various coordination modes and form coordination bonds of various strengths to metal centres.…”