Synthesis, structure and luminescence behaviour of bis(tridentate) Schiff base bridged dinuclear lead(II) pseudohalides

被引：12
|
作者：
Chattopadhyay, Soumi [1 ]
Bhar, Kishalay [1 ]
Khan, Sumitava [1 ]
Mitra, Partha [2 ]
Butcher, Raymond J. [3 ]
Ghosh, Barindra K. [1 ]
机构：
[1] Univ Burdwan, Dept Chem, Burdwan 713104, W Bengal, India
[2] Indian Assoc Cultivat Sci, Dept Inorgan Chem, Kolkata 700032, India
[3] Howard Univ, Dept Chem, Washington, DC 20059 USA
来源：
JOURNAL OF MOLECULAR STRUCTURE | 2010年 / 966卷 / 1-3期
关键词：
Dinuclear lead(II); Pseudohalides; Bis(tridentate) Schiff base; X-ray structures; Luminescence; COORDINATION POLYMERS; X-RAY; MOLECULAR-STRUCTURE; MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURE; CU(II) COMPLEXES; DONOR LIGANDS; COPPER(II); THIOCYANATE; FAMILY;
D O I：
10.1016/j.molstruc.2009.12.015
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Two pentacoordinated dinuclear lead(II) compounds [Pb-2(pbap)(N-3)(4)] (1) and [Pb-2(pbap)(NCS)(4)] (2) [pbap=N-((1-pyridin-2-yl)benzylidene)-N'-[2-(4-{2-1((1-pyridin-2-yl)benylidene)amino]ethyl}piperazin-1-yl)ethyl]amine] are prepared and characterized using microanalytical, spectroscopic. thermal and other physicochemical results. Single crystal X-ray diffraction measurements have been made to define the metal coordination spheres. Structural analyses reveal dinucleating bis(tridentate) behaviour of the hexadentate Schiff base (pbap) binding two metal ions. In the centrosymmetric dimers 1 and 2, each lead(II) center adopts a distorted square pyramidal geometry with PbN5 chromophore ligated by each (N-p, N-i, N-a) donor set of pbap and two N atoms of terminal pseudohalides. In DMF solutions at room temperature the complexes display high-energy intraligand (1)(pi-pi*) fluorescence. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：102 / 106
页数：5
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