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Synthesis, Molecular Structure and Solution Dynamics of Dimeric Benzamidinates containing a Double Diazaallyl Lithium Bridge. A Rapid Interconversion of ? and ? Bonds

DOI: 10.1039/DT9940003507

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 3507 - 3510 (1994)

Update date:2022-08-23

Topics:

Authors:

Eisen, Moris S.Eisen, Moris S.

Kapon, MosheKapon, Moshe

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Article abstract of DOI:10.1039/DT9940003507

Dimeric Li reacted with the nitriles 4-XC6H4CN (X = H or Me) in diethyl ether-hexane (1:10) to yield dimeric complexes <4-XC6H4C(NSiMe3)2*Li(NCC6H4X-4)>2 (X = H 1 or Me 2).Complex 2 is dimeric in the solid state with two four-co-ordinated lithium cations bound in N,N'-bidentate ? fashion to one amidine anion (chelating), forming a double diazaallyl lithium bridge, in a monodentate ? fashion to a nitrogen lone pair of a substrate molecule, and monodentrate to a nitrogen lone pair of a second amidine anion.In solution, rapid interconversion of the different lithium-amidine bonds (? to ? and vice versa) was observed by means of the NMR chemical shifts.

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Product name:Benzamidine hydrochloride

Cas No:1670-14-0

1670-14-0

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