(CH_3)_4C_2(C_5H_4)_2Sm(C_5H_5)OC_4H_, Mr=499.4, orthorhombic, Cc2a, a=11.696(6), b=12.539(5), c=29.432(15), V=4316(4)~, Z=8, Dc=1.54g. cm^(-3), μ (MoKα)=27.8cm^(-1), F(000)=2024, R=0.077 for 1833 observed reflectio...(CH_3)_4C_2(C_5H_4)_2Sm(C_5H_5)OC_4H_, Mr=499.4, orthorhombic, Cc2a, a=11.696(6), b=12.539(5), c=29.432(15), V=4316(4)~, Z=8, Dc=1.54g. cm^(-3), μ (MoKα)=27.8cm^(-1), F(000)=2024, R=0.077 for 1833 observed reflections. In the molecule the samarium atom is bonded to three cyclopentadienyl rings and an oxygen of tetrahydrofuran(THF). The three centroids of the cyclopentadienyl rings and the oxygen form a tetrahedral configuration around the Sm(Ⅲ) atom, The average Sm-C(η~) bond distances for the three cyclopentadienyl groups are 2.72(3), 2.76(3), 2.78(8) respectively, and Sm-0 bond is 2.53(1).展开更多
The complex [(C_6H_5)_2PCH_2CH_2P(C_6H_5)_2]Fe (NO)_2, was easily synthesized by the reaction of Fe (CO)_5, NaNO_2 and (C_6H_5)_2PCH_2CH_2P(C_6H_5)_2 (dppe) in methanol and determined by X—ray diffraction which denot...The complex [(C_6H_5)_2PCH_2CH_2P(C_6H_5)_2]Fe (NO)_2, was easily synthesized by the reaction of Fe (CO)_5, NaNO_2 and (C_6H_5)_2PCH_2CH_2P(C_6H_5)_2 (dppe) in methanol and determined by X—ray diffraction which denoted that the title complex has two crystallographically independent molecules in its asymmetric unit.展开更多
文摘(CH_3)_4C_2(C_5H_4)_2Sm(C_5H_5)OC_4H_, Mr=499.4, orthorhombic, Cc2a, a=11.696(6), b=12.539(5), c=29.432(15), V=4316(4)~, Z=8, Dc=1.54g. cm^(-3), μ (MoKα)=27.8cm^(-1), F(000)=2024, R=0.077 for 1833 observed reflections. In the molecule the samarium atom is bonded to three cyclopentadienyl rings and an oxygen of tetrahydrofuran(THF). The three centroids of the cyclopentadienyl rings and the oxygen form a tetrahedral configuration around the Sm(Ⅲ) atom, The average Sm-C(η~) bond distances for the three cyclopentadienyl groups are 2.72(3), 2.76(3), 2.78(8) respectively, and Sm-0 bond is 2.53(1).
文摘The complex [(C_6H_5)_2PCH_2CH_2P(C_6H_5)_2]Fe (NO)_2, was easily synthesized by the reaction of Fe (CO)_5, NaNO_2 and (C_6H_5)_2PCH_2CH_2P(C_6H_5)_2 (dppe) in methanol and determined by X—ray diffraction which denoted that the title complex has two crystallographically independent molecules in its asymmetric unit.
