Vibrational study of hydrotris(pyrazolyl)borato complexes of rhenium(I) tricarbonyl

✍ Scribed by F. Guillermo Díaz; V. Marcelo Campos; A. Hugo Klahn O.

• Book ID: 103956902
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 414 KB
• Volume: 9
• Category: Article
• ISSN: 0924-2031
• DOI: 10.1016/0924-2031(95)00017-o

✦ Synopsis

The Fourier transform infrared and Raman spectra of the complexes hydrotris(pyrazolyl)borato rhenium tricarbonyl [TpRe(CO)3] and hydrotris(3,5-dimethylpyrazolyl)borato rhenium tricarbonyl [Tp * Re(CO) 3 ] and their ligand salts NaTp and KTp* have been recorded. From the vibrational assignment the better donor ability of the hydrotris(pyrazolyl)borato in comparison with the cyclopentadienyl ligand coordinated to the Re(CO) 3 fragment was deduced. The vibrational assignment was completed with a normal coordinate analysis based on a simplified model. The frequencies of v(Re-N) and v(B-N) were located at about 370 and 770 cm-1, respectively. The corresponding force constants were proposed equal to 1.25 and 3.9 mdyn ,~-1.