Synthesis, characterization and theoretical studies of the heteroleptic Ruthenium(II) complexes of 2,6-bis(benzimidazolyl)pyridine

被引：4
|
作者：
Naskar, Sumita [1 ,2 ]
Pakhira, Bholanath [2 ]
Mishra, Dipankar [2 ,3 ]
Mitra, Partha [4 ]
Chattopadhyay, Shyamal Kumar [2 ]
Naskar, Subhendu [1 ]
机构：
[1] Birla Inst Technol, Dept Chem, Ranchi 835215, Bihar, India
[2] Indian Inst Engn Sci & Technol, Dept Chem, Sibpur 711103, Howrah, India
[3] Tamralipta Mahavidyalaya, Dept Chem, Purba Medinipur 721636, W Bengal, India
[4] Indian Assoc Cultivat Sci, Dept Inorgan Chem, Kolkata 700032, India
来源：
POLYHEDRON | 2015年 / 100卷
关键词：
2,6-Bis(benzimidazolyl)pyridine; Heteroleptic Ruthenium complexes; Crystal structure; MLCT band; Frontier molecular orbitals; EFFECTIVE CORE POTENTIALS; MIXED-LIGAND COMPLEXES; EXCITED-STATE; DINUCLEAR RUTHENIUM; REDOX PROPERTIES; PHOTOPHYSICAL PROPERTIES; POLYPYRIDINE COMPLEXES; MOLECULAR CALCULATIONS; PHOTOINDUCED ELECTRON; ISOMERIC COMPLEXES;
D O I：
10.1016/j.poly.2015.07.058
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Four new Ruthenium(II) complexes [Ru(bbp)(pyterpy)](PF6)(2) (1), [Ru(bbP)(biP)Cl]PF6 (2), [Ru(bbp)(biq)Cl]PF6 (3) and [Ru(bbP)(Phen)Cl]PF6 (4) have been synthesized and characterized by spectroscopic techniques (IR, NMR and mass) and single crystal X-ray diffraction study of one of them (4) (where bbp = 2,6-bis(benzimidazolyepyridine, pyterpy = 4(4-pyridyl)terpyridine, phen = 1,10-phenanthroline, bip = 2-(benzimidazolyl)pyridine, biq = 2,2'-biquinoline). The electronic spectra of all the complexes show significant bathochromic shift of their lowest energy Metal to Ligand Charge Transfer band position with respect to [Ru(bpy)(3)](2+). The position of the MLCT band is modulated by the nature of the coligand, the 2,6-bis(benzimidazolyl)pyridine ligand being present in all the complexes. The change in the Ru-III/II potential is also explained on the basis of the apt donor characteristic of the ligands. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：170 / 179
页数：10
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