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Tetranuclear N‐Heterocyclic Carbene Mercury(II) Complexes Containing Triply Deprotonated Acetonitrile: Synthesis and Structural Studies
Author(s) -
Liu QingXiang,
Li ShuJuan,
Zhao XiaoJun,
Zang Yan,
Song Haibin,
Guo JianHua,
Wang XiuGuang
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900901
Subject(s) - chemistry , durene , deprotonation , acetonitrile , bromide , medicinal chemistry , carbene , denticity , supramolecular chemistry , hydrogen bond , crystal structure , photochemistry , crystallography , stereochemistry , inorganic chemistry , ion , molecule , organic chemistry , catalysis
In the presence of KO t Bu, bis[ N ‐( n Pr)benzimidazoliumylmethyl]durene bromide ( 1a ) and bis[ N ‐( n Bu)benzimidazoliumylmethyl]durene bromide ( 1b ) were treated with HgBr 2 in CH 3 CN, respectively, to afford two novel tetranuclear NHC–mercury(II) complexes, [durene(CH 2 bimy n Pr) 2 Hg 2 (CCN)Hg 2 Br 5 ] ( 2a ) and [durene(CH 2 bimy n Bu) 2 Hg 2 (CCN)Hg 2 Br 5 ] ( 2b ; durene = 1,2,4,5‐tetramethylbenzene, bimy = benzimidazol‐2‐ylidene, CCN = triply deprotonated acetonitrile). In 2a or 2b , a funnel‐like molecular structure is formed by a triply deprotonated acetonitrile, a bidentate biscarbene ligand, the Hg II ions, and the bromide ions. Additionally, analysis of the crystal packings of 2a or 2b reveals that the double‐stranded 1D supramolecular chains are formed through intermolecular weak interactions, including π–π stacking interactions, C–H ··· Br hydrogen bonds, and weak O ··· Hg bonds.