RT info:eu-repo/semantics/article
T1 Carbonylcobalt(I) complexes. The crystal and molecular structure of [Co(CO)(dppm)2] ClO4
A1 Carriedo Ule, Carmen
A1 Gómez Sal, Pilar
A1 Royo Gracia, Pascual
A1 Martínez Carrera, Sagrario
A1 García Blanco, S.
K1 Carbonylcobalt(I) complexes
K1 Ciencia
K1 Química inorgánica
K1 Science
K1 Chemistry, inorganic
AB New anionic carbonylcobalt(I) complexes [X2Co(CO)2(PPh3)](PR4) (X=Cl, PR4 = PBzPh3 (I); X = Br, PR4 = PEtPh3 (II)) have been prepared by reduction of the cobalt(II) halides with NaBH4 in the presence of PPh3 and the phosphonium salt PR4X. Cleavage of halide bridges in dimeric or polymeric [XCo(PPh3)2]n and [XCo(PPh3)]n gives the neutral dicarbonyl derivatives XCo(CO)2PPh3)2. Treatment of ClCo(CO)2(PPh3)2 with alkylating agents gives the known σ- and η- organocobalt(I) derivatives, and reactions with TIClO4 in the presence of various amounts of different mono- and bi-dentate phosphines give the cationic tricarbonyl [Co(CO)3(PPh3)2]+, dicarbonyl [Co(CO)2(PMePh2)3]+ and monocarbonyl [Co(CO)L4]+ complexes (L4 = 4P(OMe)3, 2 dppe and 2dppm). The dppm complex crystallizes in the monoclinic space group P21/c with a 17.895(6), b 10.751(2), c 24.687(4) Å, β 98.92(1)°, and Dcalc 1.35 g cm−3 for Z = 4. A final R value of 0.077 ( Rw = 0.061), based on 2656 observed reflections, was obtained. The cobalt atom exhibits a distorted trigonal bipyramidal geometry. The perchlorate anion is severely disordered or freely rotating.
PB Elsevier
SN 0022-328X
YR 1986
FD 1986
LK http://hdl.handle.net/10017/4790
UL http://hdl.handle.net/10017/4790
LA eng
DS MINDS@UW
RD 26-abr-2024