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Synthesis, Crystal Structure and Electrochemical Studies of catena ‐Poly([bis(1‐vinyl‐1 H ‐imidazole‐ κN 3 )copper(II)]‐ µ ‐phthalato‐ κ 2 O : O ′)
Author(s) -
LI ShaoXiang,
ZHAO GuangFa,
LIU FaQian,
HUANG ZhaoGe,
LI WeiHua,
LIU GuangYe
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.200890313
Subject(s) - chemistry , monoclinic crystal system , crystallography , crystal structure , electrochemistry , copper , imidazole , stereochemistry , electrode , organic chemistry
The crystal of [Cu(pa)(vim) 2 ] n (where pa=phthalic acid dianion, vim=1‐vinyl‐1 H ‐imidazole) was synthesized and its structure was characterized by X‐ray single crystal diffractometry and elemental analysis. It crystallizes in monoclinic system, C 2/ c space group with the cell parameters of a =1.6527(3) nm, b =0.81800(16) nm, c =1.4463(3) nm, β =113.19(3)°, V =1.7973(7) nm 3 , Z =4, and D c =1.537 g·cm − 3 . Final R indices [ I > 2 δ( I )] are: R 1 =0.0476, wR 2 =0.1235 while R indices for all data are: R 1 =0.0693, wR 2 =0.1355. The title compound exhibits an existence of polymeric zigzag chains extended along c ‐axis. Each Cu(II) ion is located at a crystallographic center of symmetry being coordinated by two N and two O atoms in a distorted square‐planar geometry. The electrochemical studies reveal that redox of Cu 2+ /Cu + is a quasi‐reversible one‐electron process.