Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1006, Issue 1-3, Pages 570-575Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2011.10.005
Keywords
Copper complexes; Thiocyanate; Crystal structure; Spectroscopy
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Funding
- Department of Chemistry - University of Louisiana at Lafayette
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Three mononuclear thiocyanato-Cu(II) complexes have been synthesized: the mono-thiocyanato [Cu(cyclentpam)(NCS)]ClO4 center dot 3H(2)O (1) and [Cu(DPA)(NCS)ClO4] (2), and the dithiocyanato complex Cu(bdmpzpy)(NCS)(2) (3), where cyclen-tpam = 1,4,7,10-tetrakis(propionamide)-1,4,7,10-tetraazacyclododecane, DPA = bis(2-pyridylmethyl)amine, and bdmpzpy = 2,6-bis[(2,5-dimethyl-1-pyrazolyl)methyl]pyridine. The single crystal X-ray crystallography of the complexes confirmed the perfect square pyramidal geometry (SP) in 1 and distorted SP geometry in 2 and 3 with N-bonding coordination mode for the thiocyanato ligands. The IR spectra of the complexes which were consistent with the N-bonding coordination mode of the thiocyanate group(s) and the visible spectra which revealed the square pyramidal geometry around the central Cu2+ ion were in complete agreement with the X-ray structural determination. (C) 2011 Elsevier B.V. All rights reserved.
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