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Synthesisand Crystal Structure of the 2:2 Complexes Between Lighter Rare Earth Nitrates and N,N,N',N'-Tetraphenyl-3,6-Dioxaoctanedioicdiamide
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作者 刘伟生 谭民裕 +1 位作者 郁开北 谭干祖 《Science China Chemistry》 SCIE EI CAS 1994年第9期1032-1044,共13页
The 2:2 complexes between lighter rare earth nitrates and N,N,N',N'-tetraphenyl-3,6- dioxaoctanedioicdiamide(TDD),[RE(TDD)_2(H_2O)_2][RE(NO_3)_6]1—4(1,2,3,4 for RE=La,Ce,Pr, Nd,respectively)and[Ce(TDD)_2(H_2O... The 2:2 complexes between lighter rare earth nitrates and N,N,N',N'-tetraphenyl-3,6- dioxaoctanedioicdiamide(TDD),[RE(TDD)_2(H_2O)_2][RE(NO_3)_6]1—4(1,2,3,4 for RE=La,Ce,Pr, Nd,respectively)and[Ce(TDD)_2(H_2O)_2][Ce(NO_3)_6]·CH_3OH·2H_2O_5,have been synthesized and characterized.The crystal structure of 5 reveals that TDD acts as a tetradentate forming a half-ring coordi- nation structure.There is a little difference in the conformations of the two TDDs.The Ce ions are 10-and 12-coordinated for the complex cation and anion,respectively,and the coordination polyhedrons are a bi- capped distorted square antiprism and a distorted icosahedron,respectively. 展开更多
关键词 iighter rare earth open-chain crown ether 2:2 complex
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