Two 2-D copper(II) azido compounds: catena -poly[ di -μ_1,1- azido, di -μ_N,O-(quinolinecarboxylato)(aqua)copper(II)] and 1-D catena -poly[ di -μ_N,N′-(quinoxaline)copper(II)nitrate]

Abstract

To cite this article: Alshima'a A. Massoud , Vratislav Langer , Lars Öhrstrom & Morsy A.M. Abu-Youssef (2009) Two 2-D copper(II) azido compounds: catena -poly[ di -µ 1,1 -azido, di -µ N,O -(quinolinecarboxylato)(aqua)copper(II)] and 1-D catena -poly[ di -µ N,N′ -(quinoxaline)copper(II)nitrate], Journal of Coordination Chemistry, 62:4, 519-530To link to this article: http://dx.We synthesized three copper(II) complexes with two structurally related polydentate ligands, quinoline-4-carboxylic acid (quCOOH) and quinoxaline (qux). The structures of these complexes were determined using X-ray single crystal crystallography. Complex 1, [Cu(quCOO)(N 3 )(H 2 O)] n , has a 2-D polymeric structure through di-1,1 azido groups forming (Cu 2 N 2 ) dimeric units and di-N,O quinoline carboxylate bridging the binuclear copper units. [Cu(quCOO)(N 3 )(H 2 O)] n Á 0.87MeOH, (2), has the same structure as 1 in addition to MeOH molecules separating the 2-D sheets of [Cu(quCOO)(N 3 )(H 2 O)] n . [Cu(qux)(NO 3 ) 2 ] n , (3), has no coordinated azido groups, but the quinoxaline is a bidentate bridging ligand giving a 1-D chain, while the O,O 0 chelating nitrato groups stabilize the chain structure by forming a square planar coordination sphere around copper. IR and UV-Vis spectra of the complexes are in agreement with the crystal structures.

Synthesis, spectroscopic and biological studies on the new symmetric Schiff base derived from 2,6-diformyl-4-methylphenol with N-aminopyrimidine

“…The results of this investigation revealed that the ligand, Cu(II), Ni(II) and Co(II) complexes possessed higher antimicrobial activity, although it was generally reported that free ligands shown lower activity than complexes [7][8][9]27,28]. Additionally, when all the antimicrobial MIC values were compared, the ligand and Cu(II) complex displayed the highest antimicrobial efficacy with MIC values ranging between 20-40 mg mL À1 .…”