Synthesis and Structure of a New Tetrakis(pentafluorophenyl)borate Salt of the Silver(I) Cation with Novel Trigonal Planar Tris(benzene) Coordination

A new, analytically pure silver(I) salt,
Ag(C6H6)3+B(C6F5)4- (1), was prepared, and its structure
determined by single-crystal X-ray crystallography. The
geometry around the silver atom in salt 1 is trigonal
planar, which represents a novel coordination mode for
a silver(I) coordinated with three independent arene
molecules. The three benzene molecules are bound to the
silver atom with estimated hapticities of η1.36, η1.31, and
η1.44. No contact was found between the silver cation and
the B(C6F5)4- anion.

本研究制备了一种分析纯的新型银(I)盐Ag(C₆H₆)₃⁺B(C₆F₅)₄⁻（编号为1），并通过单晶X射线衍射法解析了其晶体结构。该盐中银原子的配位几何为平面三角形，这代表了银(I)与三个独立芳烃分子配位的新型配位模式。三个苯分子与银原子结合的估算η配位数分别为η1.36、η1.31和η1.44。未发现银阳离子与B(C₆F₅)₄⁻阴离子之间存在任何接触。