Oxidative addition of cyanogen bromide to C,N-chelated and Lappert's stannylenes

0542067 - ÚMCH 2022 RIV GB eng J - Článek v odborném periodiku
Švec, P. - Samsonov, M. A. - Růžičková, Z. - Brus, Jiří - Růžička, A.
Oxidative addition of cyanogen bromide to C,N-chelated and Lappert's stannylenes.
Dalton Transactions. Roč. 50, č. 16 (2021), s. 5519-5529. ISSN 1477-9226. E-ISSN 1477-9234
Grant CEP: GA MŠMT(CZ) LTAUSA18011
Výzkumná infrastruktura: e-INFRA CZ - 90140
Institucionální podpora: RVO:61389013
Klíčová slova: physical-properties * metal alkyls * amides
Obor OECD: Inorganic and nuclear chemistry
Impakt faktor: 4.569, rok: 2021
Způsob publikování: Omezený přístup
https://pubs.rsc.org/en/content/articlelanding/2021/DT/D1DT00704A#!divAbstract

Stannylenes of L2Sn type bearing either C,N-chelating (1, L = LCN = 2-(N,N-dimethylaminomethyl)phenyl) or bulky amido (2, L = LN = N(SiMe3)2) ligands react with cyanogen bromide (Br–C[triple bond, length as m-dash]N) via an oxidative-addition reaction to give monomeric six-coordinate (LCN)2Sn(Br)CN (1a) and four-coordinate (LN)2Sn(Br)CN (2a) stannanes in moderate yields. In solution, both 1a and 2a undergo instantaneous bromido-cyanido ligand redistribution reactions, leading to mixtures containing 1a, (LCN)2SnBr2 (1b) and (LCN)2Sn(CN)2 (1c) or 2a, (LN)2SnBr2 (2b) and (LN)2Sn(CN)2 (2c), respectively. The prepared species were characterised by multinuclear NMR spectroscopy in solution (1a–c and 2a–c) and in the solid state (1a–c). The crystal structures of 1a/b/c, 2a/b/c and sole 2b were determined by XRD analyses. DFT calculations and QTAIM analysis were also carried out to corroborate the experimental results.
Trvalý link: http://hdl.handle.net/11104/0319791