Redetermination of the structure of tetrakis(acetonitrilo)silver(I) perchlorate at 173 K

Abstract

The title compound contains three independent formula units. There is a large spread of values for chemically equivalent dimensions, notably in the cations, which display tetrahedral coordination at silver; Ag–N 2.228(4)–2.315(5) [av.2.266] Å, N–Ag–N 104.6(2)–115.7(2) [av. 109.6]°.

Metal−Ligand Bonding in Coinage Metal−Phosphine Complexes: The Synthesis and Structure of Some Low-Coordinate Silver(I)−Phosphine Complexes

“…In contrast to the short Ag−P bonds in I , the Ag−N distance (2.321(2) Å) is significantly longer than that observed for [Ag(NCCH 3 ) 4 ][BF 4 ] (2.266 Å), the only other structurally characterized nitrile complex of silver. The weak nature of this interaction is supported by the solid-state IR data, which show very little shift in the C−N stretching frequencies in comparison with those for pure acetonitrile, and the ease by which the ligand is lost from the metal center's coordination sphere.…”

Li+ cation coordination by acetonitrile—insights from crystallography

“…Such solvates consistently indicate that the Cu(I) + and Ag(I) + cations are slightly smaller and larger, respectively, than Li + cations, as is evident from the N … cation bond lengths found in the reported 4/1 and 5/1 solvate crystal structures with ClO 4 2 , BF 4 2 and PF 62 anions (Table 2). [53][54][55][56][57][58][59][60][61][62][63][64] These solvates are all isostructural with the corresponding lithium salts. 47,49 In all cases, the cations have four-fold (tetrahedral) coordination.…”

“…Bond lengths (A ˚) for AN … cation (four-fold) coordination from solvate crystal structures (each solvate has three independent solvated cations and the 5/1 solvates contain one uncoordinated AN molecule per cation)47,49,[53][54][55][56][57][58][59][60][61][62][63][64] …”

Toward Improved Scalability of Cation Exchange Reactions of Metal Chalcogenide Nanocrystals

“…Acetonitrile is known to complex with Ag + in aqueous solution, and [Ag­(CH 3 CN) 4 ]­BF 4 can be isolated as a solid and is commercially available. However, the perchlorate salt of [Ag­(CH 3 CN) 4 ] + is not stable at room temperature, nor is the nitrate expected to be. This weakness of binding between Ag + and acetonitrile may be a key in the effectiveness of this reagent in rapid CE at room temperature.…”