Liebing, Phil;
Freudenberg, Jan;
Heiser, Christian;
Merzweiler, Kurt
Novel Copper(I) Clusters with 2‐(Diphenylphosphanyl)anilide Ligands. Synthesis and Crystal Structures of [Cu6X2(NHR)4] (X = Cl, Br, I; R = C6H4‐2‐PPh2)
Description:
<jats:p>Treatment of copper(I) halides Cu<jats:italic>X</jats:italic> (<jats:italic>X</jats:italic> = Cl, Br, I) with lithium 2‐(diphenylphosphanyl)anilide [Li(HL)] in THF led to the formation of hexanuclear copper(I) complexes [Cu<jats:sub>6</jats:sub><jats:italic>X</jats:italic><jats:sub>2</jats:sub>(HL)<jats:sub>4</jats:sub>] [<jats:italic>X</jats:italic> = Cl (<jats:bold>1</jats:bold>), Br (<jats:bold>2</jats:bold>), I (<jats:bold>3</jats:bold>)]. In compounds <jats:bold>1</jats:bold>–<jats:bold>3</jats:bold>, the copper atoms are in a distorted octahedral arrangement and the amide ligands adopt a μ<jats:sub>3</jats:sub>‐κP,κ<jats:sup>2</jats:sup>N bridging mode. Additionally there are two μ<jats:sub>2</jats:sub>‐bridging halide ligands. Each of the [Cu<jats:sub>6</jats:sub><jats:italic>X</jats:italic><jats:sub>2</jats:sub>(HL)<jats:sub>4</jats:sub>] clusters comprises two copper atoms, which are surrounded by two amide nitrogen atoms in an almost linear coordination [Cu–N: 186.2(3)–188.0(3) pm] and four copper atoms, which are connected to an amide N atom, a P atom, and a halogen atom in a distorted trigonal planar fashion [Cu–N: 199.6(3)–202.3(3) pm)].</jats:p>