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Your search keyword '"Chen, Wenqi"' showing total 21 results
Start Over Author "Chen, Wenqi" Journal journal of organometallic chemistry
21 results on '"Chen, Wenqi"'

4. Syntheses and crystal structures of (η5-C5H5)3Ln(THF) (Ln = Ce, Er)

Author

Zhang Yin, Xia Jusong, Jin Zhongsheng, Lin Guanyang, Wei Gecheng, and Chen Wenqi

Subjects
Potassium, Organic Chemistry, Inorganic chemistry, chemistry.chemical_element, Ether, Crystal structure, Biochemistry, Inorganic Chemistry, Erbium, chemistry.chemical_compound, Cerium, Sodium cyclopentadienide, Crystallography, chemistry, X-ray crystallography, Materials Chemistry, Molecule, Physical and Theoretical Chemistry
Abstract

Brown crystalline tricyclopentadienyl cerium tetrahydrofuranate (THF) complex (eta5-C5H5)3Ce(THF) was prepared by the reaction of (NH4)2Ce(NO3)6 with sodium cyclopentadienide (C5H5Na) in THF at molar ratio of 1:6. ErCl3.4THF reacts with potassium cyclooct

Published
1994

20. Syntheses and crystal structures of bis(tetrahydrofurfurylindenyl) lanthanocene chlorides (C4H7OCH2C9H6)2LnCl (Ln=Nd, Sm, Dy, Ho, Er, Yb)

Author

Cheng, Jianhua, Cui, Dongmei, Chen, Wenqi, Tang, Tao, and Huang, Baotong

Subjects
*TETRAHYDROFURAN, *RARE earth metals, *CRYSTALS
Abstract

Reaction of anhydrous lanthanide trichlorides with tetrahydrofurfuryl indenyl lithium in THF afforded bis(tetrahydrofurfurylindenyl) lanthanocene chlorides complexes (C4H7OCH2C9H6)2LnCl, Ln=Nd (1), Sm (2), Dy (3), Ho (4), Er (5), Yb (6). The X-ray crystallographic structures of all the six complexes were determined and these indicate that they are unsolvated nine-coordinate monomeric complexes with a trans arrangement of both the sidearm and indenyl rings in the solid state. They belong to the same crystal system (orthorhombic) and space group (P212121) with the same structure. Especially, they are more stable to air and moisture than the corresponding unsubstituted indenyl lanthanide complexes. [Copyright &y& Elsevier]

Published
2002
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21. Synthesis and characterization of (C5H9C9H6)2Yb(THF)2(II) (1) and [(C5H9C5H4)2Yb(THF)]2O2 (2), and ring-opening polymerization of lactones with 1

Author

Cui, Donmei, Tang, Tao, Cheng, Jianhua, Hu, Ninghai, Chen, Wenqi, and Huang, Baotong

Subjects
*CYCLOPENTADIENE, *CHEMICAL systems
Abstract

Reaction of YbI2 with two equivalents of cyclopentylindenyl lithium (C5H9C9H6Li) affords ytterbium(II) substituted indenyl complex (C5H9C9H6)2Yb(THF)2 (1) which shows high activity to ring-opening polymerization (ROP) of lactones. The reaction between YbI2 and cyclopentylcyclopentadienyl sodium (C5H9C5H4Na) gives complex [(C5H9C5H4)2Yb(THF)]2O2 (2) in the presence of a trace amount of O2, the molecular structure of which comprises two (C5H9C5H4)2Yb(THF) bridged by an asymmetric O2 unit. The O2 unit and ytterbium atoms define a plane that contains a Ci symmetry center. [Copyright &y& Elsevier]

Published
2002
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