Synthesis and Isolobal Displacement Reactions of Heteronuclear Tetrahedral Clusters (η5-C5H5)(η5-RC5H4)MNiFeS(CO)5(M=Mo,W)

Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (S1): 100.

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Synthesis and Isolobal Displacement Reactions of Heteronuclear Tetrahedral Clusters (η⁵-C₅H₅)(η⁵-RC₅H₄)MNiFeS(CO)₅(M=Mo,W)

HU Qing-Mei¹, ZENG Guang-Huai¹, SONG Li-Cheng¹, SUN Jie²

1. Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China;
2. State Key Laboratory of Organometcdlic Chemistry, Shanghai 200032, China

Received:2001-07-22 Online:2001-12-31 Published:2001-12-31

Abstract

Abstract:

Through isolobal displacement reaction of (η⁵-RC₅H₄)MCoFeS(CO)₈ (1a:M=Mo, R=H; 1b:M=Mo,R=MeO₂C; 1c:M=Mo, R=Me; 1d:M=Mo, R=EtO₂C:1e:M=W,R=H) with Cp₂Ni, a series of MNiFeS clusters have been synthesized. Further isolobal displacement reactions of 2a,b with Co₂(CO)₈ and 2c,d with Fe₂(CO)₉ produce MoFeCoS clusters (η⁵-RC₅H₄)MoCoFeS(CO)₈ (1a:R H; 1b:R=MeO₂C) and MoNiFe₂S clusters (η⁵-C₅H₅)(η⁵-RC₅H₄)MoNiFe₂S(CO)₁₀ (3a:R=Me; 3b:R=EtO₂C), respectively. New cluster complexes 2c-e and 3a,b have been characterized by elemental analysis, IR, ¹H NMR spectroscopy. In addition, the crystal structure of the previously reported analog of 3a,b (η⁵-C₅H₅)(η⁵-MeO₂CC₅H₄)MoNiFe₂S(CO)₁₀ (3c) has been determined by X-ray diffraction techniques. 3c belongs to monoclinic system, space group Cc(#9), cell parameters a=1.0051(3) nm, b=1,5311(5) nm, c=1.7437 nm,β=105.5(3)°, Z=4. Final agreement factors R=0.025,Rw=0.033.

Key words: Isolobal displacement, MCoFeS(M=Mo, W) clusters, MNiFeS(M=Mo, W)clusters, MoNiFezS clusters, synthesis, crystal structure

CLC Number:

O614

TrendMD:

HU Qing-Mei, ZENG Guang-Huai, SONG Li-Cheng, SUN Jie. Synthesis and Isolobal Displacement Reactions of Heteronuclear Tetrahedral Clusters (η⁵-C₅H₅)(η⁵-RC₅H₄)MNiFeS(CO)₅(M=Mo,W)[J]. Chem. J. Chinese Universities, 2001, 22(S1): 100.

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Synthesis and Isolobal Displacement Reactions of Heteronuclear Tetrahedral Clusters (η⁵-C₅H₅)(η⁵-RC₅H₄)MNiFeS(CO)₅(M=Mo,W)

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