μ₃-Chlorido-tris(bis{1-[2-(dimethylamino)ethyl]-3-methylimidazol-2-ylidene}silver(I)) dichloride

Abstract

In the crystal structure of the title compound, [Ag3Cl(C8H15N3)6]Cl2, the AgI ion, which is located on a twofold rotation axis, exists in a T-shape coordination environment. Two carbene C atoms of the N-heterocyclic carbene (NHC) ligands are bonded tightly forming a slightly bent [Ag(NHC)2]+ cation [C—Ag—C angle = 162.80 (18)°]. Three of these complex cations are further aggregated by one bridging chloride anion, which is lying on a threefold rotoinversion axis and is only loosely binding to the Ag+ ions. The N atom of the amine group is not engaged in any coordinative bond.

Bis(ether-functionalized NHC) Nickel(II) Complexes, Trans to Cis Isomerization Triggered by Water Coordination, and Catalytic Ethylene Oligomerization

“…The Ag–C carbene distances of 2.100(3) and 2.113(3) Å are in good agreement with other distances reported for homoleptic cationic bis­(NHC) silver­(I) complexes . The structure of 12 reveals a weak electrostatic interaction between the silver cation and the chloride ion (Ag–Cl distance of 3.0525(8) Å), as observed in related complexes. ,, The chloride is only acting as a counteranion for the [Ag­(NHC) 2 ] + moiety. A similar complex featuring the same connectivity of Ag­(I) with ligand 3 but containing [AgCl 2 ] − as anion was published in 2011…”