摘要
A new pseudo Keggin-type bicapped compound（Et3N）0.5（en）2[SiMo12O40（VO）2]·4H2O（Et3N=triethylamine,en=ethylenediamine） has been hydrothermally synthesized and characterized by IR,elemental analysis,TG and X-ray crystallography.The title compound crystallizes in monoclinic,space group P21/n with a=17.576（2）,b=13.535（1）,c=21.587（2）,β=103.790（10）°,V=4987.3（8）3,Z=4,Dc=2.925 Mg/m3,Mr=2196.12,F（000）=4148,μ=3.400 mm–1,R=0.0379 and wR=0.1219.The most remarkable structural feature of the compound is that the clusters represent bicapped pseudo-Keggin structure and are linked one by one through V-O-V bonds forming an infinite 1D chain. Furthermore, such chains are interconnected in a cross-like arrangement through multiform hydrogen bonds to yield a 3D supramolecular network.
A new pseudo Keggin-type bicapped compound（Et3N）0.5（en）2[SiMo12O40（VO）2]·4H2O（Et3N=triethylamine,en=ethylenediamine） has been hydrothermally synthesized and characterized by IR,elemental analysis,TG and X-ray crystallography.The title compound crystallizes in monoclinic,space group P21/n with a=17.576（2）,b=13.535（1）,c=21.587（2）,β=103.790（10）°,V=4987.3（8）3,Z=4,Dc=2.925 Mg/m3,Mr=2196.12,F（000）=4148,μ=3.400 mm–1,R=0.0379 and wR=0.1219.The most remarkable structural feature of the compound is that the clusters represent bicapped pseudo-Keggin structure and are linked one by one through V-O-V bonds forming an infinite 1D chain. Furthermore, such chains are interconnected in a cross-like arrangement through multiform hydrogen bonds to yield a 3D supramolecular network.
基金
supported by the National Natural Science Foundation of China (No 20701012)
the Key Project of Chinese Ministry of Education (No 207068)
the Foundation of Henan Educational Committee of China (No 2007150003 and 2008B150002)
the Foundation for University Youth Key Teacher of Henan Province
