✦ LIBER ✦

The stability of the borazole-to-metal bond in R3B3N3R′3Cr(CO)3. Kinetic and thermochemical studies

✍ Scribed by M. Scotti; H. Werner; D.L.S. Brown; S. Cavell; J.A. Connor; H.A. Skinner

Book ID: 104138374
Publisher: Elsevier Science
Year: 1977
Tongue: English
Weight: 610 KB
Volume: 25
Category: Article
ISSN: 0020-1693
DOI: 10.1016/s0020-1693(00)95724-4

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✦ Synopsis

Kinetic studies for the reaction of R3B3N3R;0-(CO), (R and R ' = Me, Et, n-l+, i-Pr) with tertiary phosphites are reported. The results indicate that steric factors are most important for the rate of ring ligand displacement. There is no correlation between AC' (293 K) and the strength of the borazolechromium bond. The bond enthalpy contribution B3N3&-X? has been determined by thermal decomposition and by iodination and shown to be 25 f 3 kcaljmol for R = Me and Et. The value of D [B3N3 R&Y] is much less than D [C6 R6-CT] which is discussed with regard to the different type of bonding modes.

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