77187-30-5Relevant academic research and scientific papers
LIGAND SUBSTITUTION OF FeRu2(CO)12 AND Fe2Ru(CO)12 WITH TERTIARY PHOSPHINES AND PHOSPHITES
Venaelaeinen, Tapani,Pakkanen, Tapani
, p. 269 - 284 (2007/10/02)
Ligand substitution of the mixed-metal clusters FeRu2(CO)12 and Fe2Ru(CO)12 with triphenylphosphine and trimethylphosphite has been studied.Mono- and di-substituted derivatives have been synthesized and characterized structurally.The following crystal and molecular structures are reported: Fe2Ru(CO)11PPh3: triclinic, space group P1, a 9.203(2), b 11.903(3), c 15.117(4) Angstroem, α 81.54(2), β 87.28(2), γ 66.72(2) deg, Z = 2; Fe2Ru(CO)11P(OMe)3: orthorhombic, space group Pna21, a 17.220(5), b 14.572(4), c 8.708(6) Angstroem, Z = 4, FeRu2(CO)11PPh3: monoclinic, space group P21/n, a 11.435(3), b 16.034(5), c 16.642(4) Angstroem, β 93.35(2) deg, Z = 4; FeRu2(CO)10(PPh3)2: orthorhombic, space group Pccm, a 14.854(4), b 17.180(7), c 16.786(12) Angstroem, Z = 4.Ligand substitution is found to occur preferentially at the ruthenium centers of the FeRu2 and Fe2Ru clusters.Monosubstitution causes expansion of both of the clusters while the overall geometry is practically unchanged.Disubstitution of FeRu2(CO)12 causes contraction of the cluster and leads to a formation of carbonyl bridges.The structurall trends have been interpreted in terms of electronic and packing effects of ligand substitution.The X-ray structures of Fe2Ru(CO)12 and FeRu2(CO)12 are not known; the ligand substitution studies indicate that Fe2Ru(CO)12 has the same structure as Fe3(CO)12, and that FeRu2(CO)12 does not have a Ru3(CO)12 structure as postulated previously from the IR studies.
Synthesis of novel halo-bridged trinuclear ruthenium-iron derivatives. X-ray structure of FeRu2(μ-Cl)2(CO)8(Ph 2PC≡C-t-Bu)2
Jones, Denis F.,Dixneuf, Pierre H.,Southern, Timothy G.,Le Marouille, Jean-Yves,Grandjean, Daniel,Guenot, Pierre
, p. 3247 - 3252 (2008/10/08)
Reaction of RuCl2(L)C6H6 (1) (L = P(OMe)3, PPh3, PMe2Ph, PMe3, Ph2PC≡C-t-Bu) with Fe2(CO)9 yields trinuclear complexes Ru3(CO)10L2 (2), FeRu2(CO)10L2 (3), and RuFe2(CO)11L (4) which has two carbonyls bridging the equivalent iron atoms and, as the major product, the novel derivative FeRu2(μ-Cl)2(CO)8L2 (5) resulting from partial dehalogenation. All these compounds have the phosphorus groups selectively bonded to the ruthenium atoms. The compound FeRu2(μ-Cl)2(CO)8(Ph 2PC≡C-t-Bu)2 (5e) crystallizes in space group P21/c with cell dimensions a = 12.103 (1) A?, b = 21.618 (7) A?, c = 17.949 (5) A?, β = 97.873 (27)°, and Z = 4. Refinement based on 3520 observed diffractometer data converged at R = Rw = 0.083. Each phosphorus atom is coordinated to one ruthenium atom in a position trans to the Fe-Ru bonds which are equivalent [Fe-Ru(1) = 2.808 (3) A? and Fe-Ru(2) = 2.809 (3) A?]. The Ru-Fe-Ru angle is 69.07 (4)°. The ruthenium atoms are bridged by two chloro groups and are maintained at a distance of 3.185 (2) A?. The relative positions of the phosphinoacetylene groups destroy the C2v symmetry.
