摘要
A new bis（imidazolium） compound,[H2L（H2btec）2]·H4btec（1,L=1,1＇-（butane-1,4-diyl）bis（imidazole）,H4btec=1,2,4,5-benzenetetracarboxylatic acid）,has been synthesized and structurally characterized by single-crystal X-ray diffraction.The title compound crystallizes in the monoclinic system,space group Pnma,with a=13.3908（11）,b=13.9249（12）,c=16.2166（14）,V=2957.6（4）3,Z=4,Mr=698.55,Dc=1.569 mg/m3,F（000）=1448,μ（MoKα）=0.130 mm-1,the final R=0.0584 and wR=0.1538 for 4295 observed reflections with I2σ（I）.The compound consists of one 1,1＇-（butane-1,4-diyl）bis（imidazolium） cation,one neutral H4btec and one H2btec2-（Only two para carboxyl groups are deprotonated,and two protonated ones remain free） anion.A one-dimensional hydrogen bonding chain and a 2D hydrogen bonding network are formed via intermolecular N–H…O and O–H…O hydrogen bonds.These adjacent chains are further stacked through intermolecular π-π and hydrogen bonding interactions to form a 3D supramolecular network.
A new bis（imidazolium） compound,[H2L（H2btec）2]·H4btec（1,L=1,1＇-（butane-1,4-diyl）bis（imidazole）,H4btec=1,2,4,5-benzenetetracarboxylatic acid）,has been synthesized and structurally characterized by single-crystal X-ray diffraction.The title compound crystallizes in the monoclinic system,space group Pnma,with a=13.3908（11）,b=13.9249（12）,c=16.2166（14）,V=2957.6（4）3,Z=4,Mr=698.55,Dc=1.569 mg/m3,F（000）=1448,μ（MoKα）=0.130 mm-1,the final R=0.0584 and wR=0.1538 for 4295 observed reflections with I2σ（I）.The compound consists of one 1,1＇-（butane-1,4-diyl）bis（imidazolium） cation,one neutral H4btec and one H2btec2-（Only two para carboxyl groups are deprotonated,and two protonated ones remain free） anion.A one-dimensional hydrogen bonding chain and a 2D hydrogen bonding network are formed via intermolecular N–H…O and O–H…O hydrogen bonds.These adjacent chains are further stacked through intermolecular π-π and hydrogen bonding interactions to form a 3D supramolecular network.
基金
supported by the Natural Science Foundation of Henan Province (No 092102310075)
