Synthesis, spectroscopic characterization and X-ray crystal structures of oxo-bridged oxo(haloaryl) imido hydrotris(3,5-dimethylpyrazolyl)borate molybdenum(V) complexes

Abstract

. This is a new synthetic method for preparing Mo-O-Mo bridged oxo(imido) molybdenum(V) species by double deprotonation of the anilines. The complexes were characterized by IR and 1 H-NMR. spectroscopy, FAB mass spectrometry, elemental analysis and X-ray crystallography which revealed that the two chloro ligands are trans to each other in 1b and 2, whereas they are cis to each other in 1a. All compounds have Mo-O-Mo linkages and near linear arylimido moieties.

Synthesis, characterization and electrochemical behavior of oxo-bridged (arylimido)[tris(3,5-dimethylpyrazolyl)borato] molybdenum(V) complexes

“…An additional, new consideration is derived from a comparison of all structures determined so far [27][28][29]. This shows that the molecule systematically adopts the same diastereomeric configuration.…”

Vibrational spectra of transition element compounds

“…257 The IR and Raman spectra of Mo(N 2 )(dpepp)(dppm), where dpepp = Ph 2 P(CH 2 CH 2 PPh 2 ) 2 , dppm = Ph 2 PCH 2 PPh 2 , show nMoN at 454 cm À1 (449 cm À1 for 15 N). 265 The IR spectra of [(MOS 3 ) 2 Au 2 (dppe)] 2À , where M = Mo or W, gave nMQO near 900 cm À1 , nMQS near 500 cm À1 and nAu-P near 520 cm À1 . 265 The IR spectra of [(MOS 3 ) 2 Au 2 (dppe)] 2À , where M = Mo or W, gave nMQO near 900 cm À1 , nMQS near 500 cm À1 and nAu-P near 520 cm À1 .…”