A homochiral complex,Ni 2 (salen) 2 (1,salen=(R,R)-(-)-N,N-bis(3-tert-butyl-5-(4ethynylpyridyl)salicyl-idene)-1,2-diaminocyclohexane),has been synthesized and characterized by IR,microanalysis,CD spectra,T...A homochiral complex,Ni 2 (salen) 2 (1,salen=(R,R)-(-)-N,N-bis(3-tert-butyl-5-(4ethynylpyridyl)salicyl-idene)-1,2-diaminocyclohexane),has been synthesized and characterized by IR,microanalysis,CD spectra,TGA,powder and single-crystal X-ray crystallography.It crystallizes in triclinic,space group P1 with a=11.896(2),b=12.571(3),c=13.197(3),α=65.61(3),β=73.90(3),γ=75.87(3)o,V=1707.9(6) 3,Z=2,C 42 H 42 N 4 NiO 2,M r=693.51,D c=1.349 g/cm 3,F(000)=732,μ=0.612 mm-1,GOOF=1.015,the final R=0.0290 and wR=0.0796 for 9002 observed reflections with I 2σ(Ⅰ).The complex architecture is constructed by intermolecular π···π interaction and assembled into a 2D structure via C-H···π interactions between the cyclohexanes and pyridine rings.展开更多
MMDS是无线通信中的一种,它的英文全名为Muhichannel Microwave Distribution System,中文含义叫多路微波分配系统。这种技术应用在广播电视行业当中,主要是用来解决在中小城市或郊区有线电视(HFC)覆盖不到的地方。MMDS系统不但方...MMDS是无线通信中的一种,它的英文全名为Muhichannel Microwave Distribution System,中文含义叫多路微波分配系统。这种技术应用在广播电视行业当中,主要是用来解决在中小城市或郊区有线电视(HFC)覆盖不到的地方。MMDS系统不但方便安装调试,而且由这种技术组成的系统重量轻、体积小、占地面积少,投资也较少。展开更多
基金supported by NSFC-20971085"973" Programs (2007CB209701 and 2009CB930403)+1 种基金the Major Fundamental Research of Shanghai Science and Technology Committee (10dj1400102)the Key Project of State Education Ministry
文摘A homochiral complex,Ni 2 (salen) 2 (1,salen=(R,R)-(-)-N,N-bis(3-tert-butyl-5-(4ethynylpyridyl)salicyl-idene)-1,2-diaminocyclohexane),has been synthesized and characterized by IR,microanalysis,CD spectra,TGA,powder and single-crystal X-ray crystallography.It crystallizes in triclinic,space group P1 with a=11.896(2),b=12.571(3),c=13.197(3),α=65.61(3),β=73.90(3),γ=75.87(3)o,V=1707.9(6) 3,Z=2,C 42 H 42 N 4 NiO 2,M r=693.51,D c=1.349 g/cm 3,F(000)=732,μ=0.612 mm-1,GOOF=1.015,the final R=0.0290 and wR=0.0796 for 9002 observed reflections with I 2σ(Ⅰ).The complex architecture is constructed by intermolecular π···π interaction and assembled into a 2D structure via C-H···π interactions between the cyclohexanes and pyridine rings.
文摘MMDS是无线通信中的一种,它的英文全名为Muhichannel Microwave Distribution System,中文含义叫多路微波分配系统。这种技术应用在广播电视行业当中,主要是用来解决在中小城市或郊区有线电视(HFC)覆盖不到的地方。MMDS系统不但方便安装调试,而且由这种技术组成的系统重量轻、体积小、占地面积少,投资也较少。