Crystal structure of a Pd4 carbonyl tri­phenyl­phosphane cluster [Pd4(CO)5(PPh3)4]·2C4H8O, comparing solvates

Acta Crystallographica Section E: Crystallographic Communications

Devillers, M.¹  Robeyns, K.¹  Tinant, B.¹  Willocq, C.¹  Hermans, S.¹ 

[1] Institute of Condensed Matter and Nanosciences (IMCN), Université Catholique de Louvain, 1 Place Louis Pasteur, B 1348 Louvain-la-Neuve, Belgium

关键词: STRUCTURE TRANSFORMATION;    HOMONUCLEAR CLUSTER;    PALLADIUM;    GOLD;    CRYSTAL STRUCTURE;   

DOI  :  10.1107/S205698901502441X

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

Attempts to synthesize Au–Pd heterometallic compounds from homonuclear palladium or gold complexes, [Pd(PtBu2)2] and [Au(PPh3)Cl] in a tetra­hydro­furan (THF) solution under a CO atmosphere resulted in a homonuclear Pd cluster, namely penta­kis­(μ-carbonyl-κ2C:C)tetra­kis­(tri­phenyl­phosphane-κP)tetrapalladium(5 Pd—Pd) tetra­hydro­furan disolvate, [Pd4(CO)5(C18H15P)4]·2C4H8O. The complex mol­ecule lies on a twofold rotation axis. The crystal structure is described in relation to the CH2Cl2 solvate previously determined by our group [Willocq et al. (2011). Inorg. Chim. Acta, 373, 233–242], and in particular to the desolvated structure [Feltham et al. (1985). Inorg. Chem. 24, 1503–1510]. It is assumed that the title compound transforms into the latter structure, upon gradual loss of solvent mol­ecules. In the title compound, the symmetry-unique THF solvent mol­ecule is linked to the complex mol­ecule by a weak C—H⋯O hydrogen bond. Contributions of disordered solvent molecules to the diffraction intensities, most likely associated with methanol, were removed with the SQUEEZE [Spek (2015). Acta Cryst. C71, 9–18] algorithm.

【 授权许可】

CC BY