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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/GA17-10377S" target="_blank" >GA17-10377S: Multideprotonovatelné, ambifilické a hybridní ligandy s uspořádáním vhodným pro tvorbu oligometalických komplexů kovů</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Organometallic Chemistry

ISSN

0022-328X

e-ISSN

—

Svazek periodika

849-850

Číslo periodika v rámci svazku

November

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

88-97

Kód UT WoS článku

000412574100014

EID výsledku v databázi Scopus

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