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Title: Syntheses, structures and properties of pentacoordinated zinc(II) halide complexes containing a tridentate Schiff base as end capping ligand
Authors: Roy, Subhasis
Kundu, Subhasish
Bhar, Kishalay
Satapathi, Smita
Mitra, Partha
Ghosh, Barindra Kumar
Keywords: Coordination chemistry;Zinc;Schiff bases;Tridentate Schiff bases;Crystal structures;Luminescence;End capping ligands
Issue Date: 4-Jan-2013
Abstract: Three neutral pentacoordinated complexes of the type [Zn(L)X2].nH2O [L = (N,N-diethyl,N'-(pyridin-2-yl)benzylidene)-ethane-1,2-diamine; X = Cl-, n = 0.5, X = Br-, n = 0 and X = I-, n = 0] have been isolated using 1:1 molar ratio of the corresponding zinc(II) halide and the tridentate Schiff base. The compounds are characterized by elemental analyses, spectroscopic and other physicochemical data. Single crystal X-ray structural analyses reveals that the zinc(II) center in these complexes adopts a distorted square pyramidal geometry with a ZnN3X2 chromophore. Intermolecular C-H···O, C-H···Br and C-H···I hydrogen bonds along with ··· and C-H··· interactions indicate different crystalline aggregates. The complexes display intraligand 1(-*) fluorescence in DMF solutions at room temperature.
Page(s): 34-40
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.52A(01) [January 2013]

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