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

Acta Crystallographica Section E: Crystallographic Communications

Edelmann, F.T.¹  Wang, S.¹  Harmgarth, N.²  Liebing, P.³ 

[1] Chemisches Institut der Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany

关键词: CRYSTAL STRUCTURE;    LITHIUM;    SILVER;    AMIDINATE;    ALKYNYLAMIDINATE;    CO-CRYSTAL;   

DOI  :  10.1107/S2056989016017680

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The silver(I) amidinates bis­[μ-N1,N2-bis­(propan-2-yl)benzamidinato-κ2N1:N2]disilver(I), [Ag2(C13H19N2)2] or [Ag{PhC(NiPr)2}]2 (1), and bis­(μ-N1,N2-di­cyclohexyl-3-cyclo­propyl­propynamidinato-κ2N1: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(μ-N1,N2-di­cyclo­hexyl-3-cyclo­propyl­propynamidinato-κ2N1:N2)disilver(I) bis­(μ-N1,N2-di­cyclo­hexyl-3-cyclo­propyl­propynamidinato-κ3N1,N2:N1)bis­(tetra­hydro­furan-κO)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 tetra­hedral coordination of the metal atoms. In the silver(I) derivatives 1 and 2a, the amidinate ligand adopts a μ-κN:κN′ coordination, while it is a μ-κN:κN:κN′-coordination in the case of lithium derivative 2b.

【 授权许可】

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