New research of reaction behaviour of triorganylcyclotriphosphines. The crystal structures of [(PPh3)2Pt(PtBu)3], [(PPh3)2Pd(PtBu)2], [(CO)4Cr{(PiPr)3}2], [RhCl(PPh3)(PtBu)3]

Article abstract of DOI:10.1002/(sici)1521-3749(199803)624:3<443::aid-zaac443>3.0.co;2-a

By the reaction of triorganylcyclotriphosphines with transition metal complexes single-and polynuclear compounds are formed, in which the cyclophosphines are bonded in different ways to the metal, the ring either preserving structure or under going ring opening. Depending on the reaction conditions the following compounds can be characterized: [(PPh₃)₂Pt(P^tBu)₃] (1), [(PPh₃)₂Pd(P^tBu)₂] (2), [(CO)₄Cr{(PⁱPr)₃}₂] (3), [RhCl(PPh₃)(P^tBu)₃] (4), [(NiCO)₆(μ₂-CO)₃{P^tBu) ₂}₂] (5) and [(CPFeCO)₂(μ-CO)(μ-PH^tBu)]⁺ · [FeCl₃(thf)]^- (6). The structures of 1-6 were obtained by X-ray single crystal structure analysis (1: space group P2₁/n (No. 14), Z = 4, a = 1279.6(3) pm, b = 1733.1(4) pm, c = 2079.1(4) pm, β = 90.20(3)°; 2: space group P2₁/c (No. 14), Z = 4, a = 1053.3(2) pm, b = 2085.2(4) pm, c = 1855.7(4) pm, β = 98.77(3)°; 3: space group P1 (No. 2), Z = 2, a = 1022.6(2) pm, b = 1026.4(2) pm, c = 1706.0(3) pm, α = 82.36(3)°, β = 86.10(3)°, γ = 64.40(3)°; 4: space group P1 (No. 2), Z = 2, a = 980.2(2) pm, b = 1309.5(3) pm, c = 1573.4(3) pm, α = 99.09(3)°, β = 99.46(3)°, γ = 111.87(3)°; 5: space group P2₁/c (No. 14), Z = 4, a = 1804.0(5) pm, b = 2261.2(6) pm, c = 1830.1(7)pm, β = 96.99(3)°; 6: space group P2₁/c (Mo. 14), Z = 4, a = 943.2(3) pm, b = 2510.6(7) pm, c = 1325.1(6) pm, β = 98.21(3)°).