Crystal structures of two new dinuclear Ag(I) complexes constructed from 4,4′-biphenyldicarboxylic acid and N-containing ligands

Abstract

The reaction of silver 4,4′-biphenyldicarboxylate with 1,3-diaminopropane (DAP) and 2-amino-5-methylpyridine (AMP) respectively results in the formation of two dinuclear silver(I) complexes: [Ag2(DAP)2](BPC)·2H2O (1) and [Ag2(BPC)(AMP)4]·2H2O (2), where BPC is 4,4′-biphenyldicarboxylate. The complexes are characterized by elemental analysis and X-ray crystallography. Complex 1 crystallizes in the triclinic system, P-1 space group, a = 8.585(2) A, b = 8.849(2) A, c = 9.890(3) A, α = 107.893(3)°, β = 94.139(3)°, γ = 113.202(3)°, V = 640.9(3) A3, Z = 1. Complex 2 crystallizes in the triclinic system, P-1 space group, a = 11.818(3) A, b = 13.132(4) A, c = 13.281(4) A, α = 92.571(4)°, β = 96.425(3)°, γ = 102.142(4)°, V = 1997.5(10) A3, Z = 2. Complex 1 consists of a macrocyclic dinuclear silver(I) dication, a 4,4′-biphenyldicarboxylate anion, and two water molecules of crystallization. Each Ag atom is in a linear coordination. Complex 2 consists of a dinuclear silver(I) complex molecule and two water molecules of crystallization. Each Ag atom is in a T-shaped coordination. The Ag...Ag separations are 5.127(2) A in 1 and 3.172(2) A in 2.