Antimony centre in three different roles: does donor strength or acceptor ability determine the bonding pattern?

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F24%3A39922153" target="_blank" >RIV/00216275:25310/24:39922153 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/Content/ArticleLanding/2024/DT/D4DT02787F" target="_blank" >https://pubs.rsc.org/en/Content/ArticleLanding/2024/DT/D4DT02787F</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d4dt02787f" target="_blank" >10.1039/d4dt02787f</a>

Result language
angličtina
Original language name
Antimony centre in three different roles: does donor strength or acceptor ability determine the bonding pattern?
Original language description
A set of antimony(iii) compounds containing a ligand (Ar) with a pendant guanidine function (where Ar = 2-[(Me2N)2C 00000000 00000000 00000000 00000000 11111111 00000000 11111111 00000000 00000000 00000000 N]C6H4) was prepared and characterized. This includes triorgano-Ar3Sb, diorgano-Ar2SbCl and monoorgano-ArSbCl2 compounds and they were characterized by 1H and 13C NMR spectroscopy and by single-crystal X-ray diffraction analysis (sc-XRD). The coordination capability of Ar3Sb and Ar2SbCl was examined in the reactions with either cis-[PdCl2(CH3CN)2] or PtCl2 and complexes cis-[(kappa 2-Sb,N-Ar3Sb)MCl2] (M = Pd 1, Pt 2) and [(kappa 3-N,Sb,N-Ar2SbCl)MCl2] (M = Pd 3, Pt 4) were isolated, while their structures were determined by sc-XRD. Notably, the ligands Ar3Sb and Ar2SbCl exhibit different coordination modes - bidentate and tridentate, respectively - and the antimony exhibits three distinct bonding modes in complexes 1-4, which were also subjected to theoretical studies. The guanidine substituted organostibines allowed remarkable coordination variability including three distinct modes of M & ctdot;Sb bonding (M = Pd or Pt), i.e. Sb -> M L-type and Z-type interactions involving M <- Sb donation and M -> Sb backdonation.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10300 - Physical sciences

Project
<a href="/en/project/GA21-02964S" target="_blank" >GA21-02964S: Nitrogen Ligands for Main-Group Elements - Becoming Bulkier, More Conjugated and Guilty</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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