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Crystal and mol-ecular structures of two silver(I) amidinates, including an unexpected co-crystal with a lithium amidinate.


ABSTRACT: The silver(I) amidinates bis-[?-N1,N2-bis-(propan-2-yl)benzamidinato-?2N1:N2]disilver(I), [Ag2(C13H19N2)2] or [Ag{PhC(N i Pr)2}]2 (1), and bis-(?-N1,N2-di-cyclohexyl-3-cyclo-propyl-propynamidinato-?2N1:N2)disilver(I), [Ag2(C18H27N2)2] or [Ag{cyclo-C3H5-C?C-C(NCy)2}]2 (2a), exist as centrosymmetric dimers with a planar Ag2N4C2 ring and a common linear coordination of the metal atoms in the crystalline state. Moiety 2a forms a co-crystal with the related lithium amidinate, namely bis-(?-N1,N2-di-cyclo-hexyl-3-cyclo-propyl-propynamidinato-?2N1:N2)disilver(I) bis-(?-N1,N2-di-cyclo-hexyl-3-cyclo-propyl-propynamidinato-?3N1,N2:N1)bis-(tetra-hydro-furan-?O)lithium(I) toluene monosolvate, [Ag2(C18H27N2)2][Li2(C18H27N2)2(C4H8O)2]·C7H8 or [Ag{cyclo-C3H5-C?C-C(NCy)2}]2[Li{cyclo-C3H5-C?C-C(NCy)2}(THF)]2·C7H8, composed as 2a × 2b × toluene. The lithium moiety 2b features a typical ladder-type dimeric structure with a distorted tetra-hedral coordination of the metal atoms. In the silver(I) derivatives 1 and 2a, the amidinate ligand adopts a ?-?N:?N' coordination, while it is a ?-?N:?N:?N'-coordination in the case of lithium derivative 2b.

SUBMITTER: Wang S 

PROVIDER: S-EPMC5137609 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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Crystal and mol-ecular structures of two silver(I) amidinates, including an unexpected co-crystal with a lithium amidinate.

Wang Sida S   Harmgarth Nicole N   Liebing Phil P   Edelmann Frank T FT  

Acta crystallographica. Section E, Crystallographic communications 20161115 Pt 12


The silver(I) amidinates bis-[μ-<i>N</i><sup>1</sup>,<i>N</i><sup>2</sup>-bis-(propan-2-yl)benzamidinato-κ<sup>2</sup><i>N</i><sup>1</sup>:<i>N</i><sup>2</sup>]disilver(I), [Ag<sub>2</sub>(C<sub>13</sub>H<sub>19</sub>N<sub>2</sub>)<sub>2</sub>] or [Ag{PhC(N <sup><i>i</i></sup> Pr)<sub>2</sub>}]<sub>2</sub> (<b>1</b>), and bis-(μ-<i>N</i><sup>1</sup>,<i>N</i><sup>2</sup>-di-cyclohexyl-3-cyclo-propyl-propynamidinato-κ<sup>2</sup><i>N</i><sup>1</sup>:<i>N</i><sup>2</sup>)disilver(I), [Ag<sub>2</sub  ...[more]

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