Syntheses and crystal structures of quadruply bridged Mo₂Se₄ complexes containing functionalized cyclopentadienyl ligands: trans/anti − (η⁵-CH₃O₂CC₅H₄)₂Mo₂(μ-Se)₂(μ-SeCH₂Ph)(μ-SePh) and trans/syn-(η⁵-C₂H₅O₂CC₅H₄)₂Mo₂(μ-Se)₂(μ-SePh)₂

Abstract

Two quadruply bridged Mo₂Se₄ complexes trans/anti-(η⁵-CH₃O₂CC₅H₄)₂Mo₂(μ-Se)₂(μ-SeCH₂Ph)(μ-SePh) (1) from reaction of (η⁵-CH₃O₂CC₅H₄)₂Mo₂(CO)₄ with dibenzyldiselenide and trans/syn-(η⁵-C₂H₅O₂ CC₅H₄)₂Mo₂(μ-Se)₂(μ-SePh)₂ (2) from reaction of (η⁵-C₂H₅O₂CC₅H₄)₂Mo₂(CO)₂(μ-SePh)₂ with elemental selenium have been synthesized and characterized by elemental analyses, ¹H NMR and IR spectroscopy and their crystal structures have been unequivocally determined by x-ray diffraction analyses.

Keywords:

• Selenium
• Ligand
• Mo2Se>4 complex
• Synthesis
• Crystal structure

Acknowledgment

We thank the National Natural Science Foundation of China, Yangzhou University (D0009107) and the Cambridge Crystallographic Data Centre for financial support of this work.

Supplementary data

Full crystallographic data (CCDC 218954 for Complex 1 and CCDC 154333 for Complex 2) have been deposited at the Cambridge Crystallographic Data Centre and are available on request from the Director, CCDC, 12 Union Road, Cambridge, CB2 1EZ, UK (fax: [phone]; e-mail: [email protected] or www: http//www.ccdc.cam.ac.uk).