Direct access to non-symmetric lithium nitriloamidinate and disymmetric dilithium bisamidinate complexes from 1,3-or 1,4-dicyanobenzene and lithium amides

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39911347" target="_blank" >RIV/00216275:25310/17:39911347 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jorganchem.2017.09.008" target="_blank" >http://dx.doi.org/10.1016/j.jorganchem.2017.09.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jorganchem.2017.09.008" target="_blank" >10.1016/j.jorganchem.2017.09.008</a>

Result language

angličtina

Original language name

Direct access to non-symmetric lithium nitriloamidinate and disymmetric dilithium bisamidinate complexes from 1,3-or 1,4-dicyanobenzene and lithium amides

Original language description

Non-symmetric lithium nitriloamidinate complexes of composition 3- or 4-(N equivalent to C)C6H4[C(NSiMe3)(NAr)] Li(D)(n) where Ar is phenyl, 2,6-(CH3)(2)C6H3 (Dmp) or 2,6-[(CH3)(2)CH](2)C6H3 (Dipp); D means coordinated solvent - THF or diethylether and n = 1 or 2, were prepared from 1,3- or 1,4-dicyanobenzene and one molar equivalent of appropriate trimethylsilylated lithium amide. Disymmetric dilithium bisamidinate complexes of 1, 3- or 1, 4-{[(NSiMe3)(NAr)C]Li(D)(n)}(2)C6H4 type were prepared by the same procedure using two molar equivalents of lithium amides. When the isolated lithium nitriloamidinate complexes were reacted with lithium amide of another type, asymmetric dilithium bisamidinates 3- or 4-{[(NSi-Me-3)(NAr)C]Li(D)(n)}{[(NSi-Me-3)(NAr&apos;)C]Li(D)(n)}C6H4 were obtained and characterized. The reaction period for essentially quantitative conversion of the starting material to desired bisamidinates is strongly dependent on the substitution pattern of parent lithium amides as well as the dinitrile going from hours to more than forty days in the case of Dipp-substituted amide and 1,3-dicyanobenzene combination. In the solid state, complexes bearing less bulky substituent - phenyl - tend to aggregate to dinuclear species for lithium nitriloamidinates or linear polymers for bisamidinates. Presence of more sterically demanding substituents directed the structure of prepared compounds to mononuclear species with isobidentate bonding fashion of amidinates and two molecules of solvent being extra-coordinated to the lithium atom. For all lithium amidinates prepared, the central lithium atom has distorted tetrahedral coordination geometry with ligands being in an anisobidenate or bidentate-bridging bonding fashion.

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/GA17-10377S" target="_blank" >GA17-10377S: Multideprotonable, ambiphilic and hybrid ligands with appropriate shape and electron pool for formation of oligometallic complexes</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

Journal of Organometallic Chemistry

ISSN

0022-328X

e-ISSN

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Volume of the periodical

849-850

Issue of the periodical within the volume

November

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

88-97

UT code for WoS article

000412574100014

EID of the result in the Scopus database

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