Different Products of the Reduction of (N),C,N-Chelated Antimony(III) Compounds: Competitive Formation of Monomeric Stibinidenes versus 1H-2,1-Benzazastiboles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39911697" target="_blank" >RIV/00216275:25310/17:39911697 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1002/chem.201604142" target="_blank" >http://dx.doi.org/10.1002/chem.201604142</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/chem.201604142" target="_blank" >10.1002/chem.201604142</a>

Result language

angličtina

Original language name

Different Products of the Reduction of (N),C,N-Chelated Antimony(III) Compounds: Competitive Formation of Monomeric Stibinidenes versus 1H-2,1-Benzazastiboles

Original language description

The reduction of N,C,N-chelated antimony(III) chlorides [C6H3-2,6-(CH=NR)(2)]SbCl2 (R=Ph (1), tBu (2), Dip (3); Dip=2,6-iPr(2)C(6)H(3)) with an appropriate amount of KC8 or Li[AlH4] resulted in the formation of rare examples of monomeric stibinidenes [C6H3-2,6-(CH=NR)(2)]Sb (R=Ph (4), tBu (5), Dip (6)). Similarly, the reduction of compounds 1 or 2 by two equivalents of K[B(sBu)(3)H] led to the stibinidenes 4 and 5. In contrast, the analogous reaction of compound 3 resulted in the formation of an unprecedented stibinidene [C6H3-2-(CH=NR)-6-(CH2NHR)]Sb (7) (R=Dip), in which the hydrogen atoms that come from the K[B(sBu)(3)H] are incorporated into the ligand backbone. To gain further insight into this intriguing reactivity with K[B(sBu)(3)H] and to assess the influence of the substitution at both the antimony atom and pendant substituents, we prepared compounds [C6H3-2-(CH=NDip)]Sb(Ph)Cl (8) and [C6H2-2-(CH=NDip)-4,6-(tBu)(2)]SbCl2 (9). The treatment of compound 8 with K[B(sBu)(3)H] smoothly led to the 1-Ph-2-Dip-1H-2,1-benzazastibole (11), whereas the reaction of compound 9 with K[B(sBu)(3)H] resulted in either tBu-substituted 1-Cl-2-Dip-1H-2,1-benzazastibole (13) or the formation of unprecedented Sb-Sb dimer bis(2-Dip-1H-2,1-benzazastibole) (12) depending on the reaction stoichiometry. The miscellaneous reactivity of antimony(III) precursors with reducing agents together with the structure and bonding of the resulting products has also been investigated from a theoretical point of view.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/GA15-06609S" target="_blank" >GA15-06609S: Stibinidenes and Bismuthinidenes – A New Class of Ligands for Transition Metals</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemistry - A European Journal

ISSN

0947-6539

e-ISSN

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Volume of the periodical

23

Issue of the periodical within the volume

10

Country of publishing house

DE - GERMANY

Number of pages

10

Pages from-to

2340-2349

UT code for WoS article

000395583200017

EID of the result in the Scopus database

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