77220-35-0Relevant academic research and scientific papers
Darstellung und Eigenschaften von 1,3,2-Diazaborolin-Komplexen
Schulze, Joachim,Schmid, Guenter
, p. 495 - 504 (2007/10/02)
1,3-Di-tert-butyl-2-methyl-Δ4-1,3,2-diazaboroline (1a) and 2-methyl-1,3-bis(trimethylsilyl)-Δ4-1,3,2-diazaboroline (1b) react with (CH3CN)3Cr(CO)3 to form the diazaboroline complexes (ring)-Cr(CO)3 (2a, b).The synthesis of 2a also succeeds with Cr(CO)6 and 1a by UV-irradiation or thermically.The diazaborolines 1a and 1b serve as 6?-electron donors.In contrast, 2,4,5-trimethyl-1,3-diphenyl-Δ4-1,3,2-diazaboroline (1c) is coordinated to the Cr(CO)3 group via one of the phenyl rings (2c).P(C6H5)3 substitutes the diazaboroline in 2a to form (CO)4Cr2, whereas NO+ displaces one CO-group to give di carbonyl5-(1,3-di-tert-butyl-2-methyl-1,3,2-diazaboroline)>nitrosylchromium-hexafluorophosphate (3).Mesitylene substitutes the diazaboroline ring, while hexamethylborazine starts no reaction.As a result of IR, 1H-, 11B-, 13C-NMR as well as mass spectroscopic investigations, proposals for the molecular structures are made.
