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)(2)Pt((PBu)-Bu-t)(3)] (1), [(PPh3)(2)Pd((PBu)-Bu-t)(2)] (2), [(CO)(4)Cr
{((PPr)-Pr-i)(3)}(2)] (3), [RhCl(PPh3)((PBu)-Bu-t)(3)] (4), [(NiCO)(6)(mu(2)-CO)(3){((PBu)-Bu-t)
(2)}(2)] (5) and [(CpFeCO)(2)(mu-CO)(mu-(PHBu)-Bu-t)](+).[FeCl3(thf)](-) (6). The structures of
1-6 were obtained by X-ray single crystal structure analysis (1: space group P2(1)/n (No. 14), Z
= 4, a = 1279.6(3) pm, b = 1733.1(4) pm, c = 2079.1(4) pm, beta = 90.20(3)degrees; 2: space group
P(2)1/c (No. 14), Z = 4, a = 1053.3(2) pm, b = 2085.2(4) pm, c = 1855.7(4) pm, beta = 98.77(3)
degrees; 3: space group
(No. 2), Z = 2, a = 1022.6(2) pm, b = 1026.4(2) pm, c =
1706.0(3) pm, alpha = 82.36(3)degrees, beta = 86.103(3)degrees, gamma = 64.40(3)degrees; 4: space
group (No. 2), Z = 2, a = 980.2(2) pm, b = 1309.5(3) pm, c = 1573.4(3) pm, alpha =
99.09(3)degrees, beta = 99.46(3)degrees, gamma = 111.87(3)degrees; 5: space group P2(1)/c (No.
14), Z = 4, a = 1804.0(5) pm, b = 2261.2(6) pm, c = 1830.1(7) pm, beta = 96.99(3)degrees; 6:
space group P2(1)/c (No. 14), Z = 4, a = 943.2(3) pm, b = 2510.6(7) pm, c = 1325.1(6) pm, beta =
98.21(3)degrees).