Reaction of Divalent Samarium Complexes with Phenyl Isocyanate Synthesis, Molecular Structure and Catalytic Activity of [(CH3C5H4)2(THF)Sm]2[μ-η4-(PhN)OCCO(NPh)]·2THF

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (9): 1501.

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Reaction of Divalent Samarium Complexes with Phenyl Isocyanate Synthesis, Molecular Structure and Catalytic Activity of [(CH₃C₅H₄)₂(THF)Sm]₂[μ-η⁴-(PhN)OCCO(NPh)]·2THF

YUAN Fu-Gen¹, SHEN Qi², SUN Jie³

1. Department of Chemistry, Suzhou Railway Teacher's College, Suzhou 215009, China;
2. Departmentof Chemistry, Suzhou University, Suzhou 215006, China;
3. The Open Laboratory of Organometallic Chemistry of Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China

Received:2000-06-12 Online:2001-09-24 Published:2001-09-24

Abstract

Abstract: This article describes the reaction of divalent complexes (CH₃C₅H₄)₂Sm(THF) and SmI²(THF)^x with phenyl isocyanate.(CH₃C₅H₄)₂Sm(THF) reacts with phenyl isocyanate to give the product of [(CH₃C₅H₄)₂(THF)Sm]²[μη⁴ (PhN)OCCO(NPh)]·2THF(1), while SmI²(THF)^x was oxidated to be [SmI²(THF)₅][SmI⁴(THF)₂] in PhNCOsolution. (CH₃C₅H₄)₂Sm(THF) and complex 1 display a catalytic activity for the oligomerization of phenyl isocyanate. The reaction of(CH₃C₅H₄)₂Sm(THF) with PhNCO to form complex 1 can be thought as the initiation reaction and complex 1 may be considered to be the real active species for the PhNCOoligomerization with the catalyst of(CH₃C₅H₄)₂Sm(THF). The structure of complex 1 was determined by X-ray diffraction analysis and confirmed to be a bimetallic complex with a dianionic oxamide ligand.

Key words: Samarium, Catalytic, Oligomerization, Phenyl isocyanate

CLC Number:

O614.33⁺7

TrendMD:

YUAN Fu-Gen, SHEN Qi, SUN Jie . Reaction of Divalent Samarium Complexes with Phenyl Isocyanate Synthesis, Molecular Structure and Catalytic Activity of [(CH₃C₅H₄)₂(THF)Sm]₂[μ-η⁴-(PhN)OCCO(NPh)]·2THF[J]. Chem. J. Chinese Universities, 2001, 22(9): 1501.

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Reaction of Divalent Samarium Complexes with Phenyl Isocyanate Synthesis, Molecular Structure and Catalytic Activity of [(CH₃C₅H₄)₂(THF)Sm]₂[μ-η⁴-(PhN)OCCO(NPh)]·2THF

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