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Your search keyword '"Sharma, Bhavna"' showing total 4 results
Start Over Author "Sharma, Bhavna" Journal inorganic chemistry
4 results on '"Sharma, Bhavna"'

3. Formation of the Imide [Ta(NMe2)3(μ-NSiMe3)]2 through an Unprecedented α-SiMe3 Abstraction by an Amide Ligand.

Author

Sharma, Bhavna, Chen, Shu-Jian, Abbott, Julia K. C., Chen, Xue-Tai, and Xue, Zi-Ling

Subjects
*IMIDES, *CATALYST synthesis, *MICROELECTRONICS equipment, *INTERMOLECULAR forces, *INTRAMOLECULAR proton transfer reactions
Abstract

Ta(NMe2)4[N(SiMe3)2] (1) undergoes the elimination of Me3Si-NMe2 (2), converting the -N(SiMe3)2 ligand to the ═NSiMe3 ligand, to give the imide "Ta(NMe2)3(═NSiMe3)" (3) observed as its dimer 4. CyN═C═NCy captures 3 to yield guanidinates Ta(NMe2)3-n(═NSiMe3)[CyNC(NMe2)NCy]n [n = 1 (5), 2 (6)]. The kinetic study of α-SiMe3 abstraction in 1 gives ΔH‡= 21.3(1.0) kcal/mol and ΔS‡ = -17(2) eu. [ABSTRACT FROM AUTHOR]

Published
2012
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4. Formation of the imide [Ta(NMe2)3(μ-NSiMe3)]2 through an unprecedented α-SiMe3 abstraction by an amide ligand.

Author

Sharma B, Chen SJ, Abbott JK, Chen XT, and Xue ZL

Abstract

Ta(NMe(2))(4)[N(SiMe(3))(2)] (1) undergoes the elimination of Me(3)Si-NMe(2) (2), converting the -N(SiMe(3))(2) ligand to the ═NSiMe(3) ligand, to give the imide "Ta(NMe(2))(3)(═NSiMe(3))" (3) observed as its dimer 4. CyN═C═NCy captures 3 to yield guanidinates Ta(NMe(2))(3-n)(═NSiMe(3))[CyNC(NMe(2))NCy](n) [n = 1 (5), 2 (6)]. The kinetic study of α-SiMe(3) abstraction in 1 gives ΔH(‡) = 21.3(1.0) kcal/mol and ΔS(‡) = -17(2) eu.

Published
2012
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