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Synthesis and Characterization of Copper(II) and Zinc(II) Tricyanomethanide (tcm) Complexes with Di(2‐pyridyl)amine (dpyam) as Co‐ligands: [Cu(dpyam)(tcm) 2 ], [Cu(dpyam)(tcm)(OAc)] and Zn(dpyam) 2 (tcm) 2
Author(s) -
LUO Jun,
ZHANG XinRong,
GAO EnQing,
DAI WeiQuan,
CUI LiLi,
LIU BaoShu
Publication year - 2008
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200890155
Subject(s) - chemistry , copper , crystallography , square pyramidal molecular geometry , octahedron , zinc , molecule , crystal structure , metal , octahedral molecular geometry , ligand (biochemistry) , antiferromagnetism , amine gas treating , coordination geometry , ion , atom (system on chip) , stereochemistry , hydrogen bond , organic chemistry , biochemistry , physics , receptor , computer science , embedded system , condensed matter physics
Three new transition metal tricyanomethanide complexes [Cu(dpyam)(tcm) 2 ] ( 1 ), [Cu(dpyam)(tcm)(OAc)] ( 2 ) and Zn(dpyam) 2 (tcm) 2 ( 3 ) were synthesized and characterized by single crystal X‐ray diffraction analysis. In 1 each copper(II) atom is coordinated to three tcm anions and one dpyam molecule to form a square pyramide geometry. In 2 the coordination geometry around the central metal is also square pyramidal, and each copper atom is surrounded by two tcm anions, one dpyam ligand and one OAc. Both 1 and 2 display a µ 1,5 ‐tcm bridged infinite chain structure. In 3 each zinc(II) atom is coordinated by two tcm anions and two dpyam molecules to form a distorted octahedral geometry. Different from the former two complexes, 3 shows a mononuclear structure. Magnetic susceptibility measurement in the range 2–300 K indicates that there are weak antiferromagnetic couplings between adjacent copper(II) ions in 1 ( J =−0.03 cm −1 ) and 2 ( J =−0.11 cm −1 ) respectively.