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American Chemical Society, Journal of the American Chemical Society, 11(133), p. 3836-3839, 2011

DOI: 10.1021/ja2007092

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Group 3 and Lanthanide Boryl Compounds: Syntheses, Structures, and Bonding Analyses of Sc−B, Y−B, and Lu−B σ-Coordinated NHC Analogues

Journal article published in 2011 by Liban M. A. Saleh, Krishna Hassomal Birjkumar, Andrey V. Protchenko, Andrew D. Schwarz, Simon Aldridge, Cameron Jones, Nikolas Kaltsoyannis ORCID, Philip Mountford
This paper was not found in any repository; the policy of its publisher is unknown or unclear.
This paper was not found in any repository; the policy of its publisher is unknown or unclear.

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Abstract

Reaction of [Ln(CH2SiMe3)(2)(THP)(n)][BPh4] (Ln = Sc,y, Lu; n = 3,4) with Li{B(NArCH)(2)}(THF)(2) (Ar = 2,6-(C6H3Pr2)-Pr-i) formed the first group 3 and lanthanide boryl compounds, Sc{B(NArCH)(2)}(CH2SiMe3)(2)(THF) and Ln-{B(NArCH)(2)} (CH2SiMe3)(2)(THF)(2) (Ln = Y, Lu), which contain two-center, two-electron Ln-B sigma bonds. All of these systems were crystallographically characterized. Density functional theory analysis of the Ln-B bonding found it to be predominantly ionic, with covalent character in the a-bonding Ln-B HOMO.