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From 1D Polymeric Chain to Two‐fold Parallel Interpenetration of (4,4) Net: Synthesis and Characterization of Two New Copper(II) Complexes Derived from Highly Polydentate Aminopolycarboxylate Ligand
Author(s) -
WU YaPan,
WANG YaoYu,
WANG CuiJuan,
LI DongSheng,
GUO ChunYan,
WEN GuiLin,
SHI QiZhen
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.200890224
Subject(s) - chemistry , crystallography , hydrogen bond , supramolecular chemistry , monoclinic crystal system , copper , ligand (biochemistry) , crystal structure , stereochemistry , molecule , organic chemistry , biochemistry , receptor
Two new copper(II) polymers, {[Cu 2 (egta)(bpe)(H 2 O) 2 ]·H 2 O} n ( 1 ) and {[Cu 2 (egta)(bipy)(H 2 O) 2 ]·5H 2 O} n ( 2 ), [H 4 egta=3,12‐bis(carboxymethyl)‐6,9‐dioxa‐3,12‐diazatetradecanedioic acid, bpe=1,2‐bis(4‐pyridyl)ethane, bipy4,4′‐bipyridyl] have been synthesized and structurally characterized by single‐crystal X‐ray diffraction, elemental analysis, IR spectra and TG analysis. The structure determination reveals that both 1 and 2 crystallize in a monoclinic system, space group P 2 1 /c . Complex 1 exhibits a two‐fold parallel interpenetration of (4,4) net framework consisting of 1D zigzag chains interlocked together through hydrogen bonding interaction. However, the meso‐helix chains of 2 are packed to form 2D supramolecular structures. Interestingly, in 2 , the host frameworks encapsulate a unique pentamer water cluster and are further connected into 1D tapes by water‐water hydrogen bonding interaction. Magnetic measurements reveal that there is a weak ferromagnetic interaction between the adjacent Cu(II) ions in 1 .