Heterometallic clusters of ruthenium and the group 11 elements (copper, silver, and gold) containing a COMe ligand. X-ray structure of H2Ru3(CO)8PPh3(.mu.3-COMe)(CuPPh3)

Complexes of Ir3(CO)3(η5-C9H7)3with Metal Fragment Electrophiles

“…The ratio of the coupling constants 1 J ( 109 AgP)/ 1 J ( 107 AgP) = 632/549 = 1.15, which is approximately the same as the ratio of the gyromagnetic ratios, γ 109 Ag/γ 107 Ag. The chemical shifts of the phosphorus nuclei in [Rh 3 {μ 3 -M(PPh 3 )}(μ-CO) 3 (η 5 -C 5 H 5 ) 3 + ] and for other clusters containing μ-M(PPh 3 ) units (M = Cu, Ag, Au) , also increase in the order Cu < Ag < Au; an appropriate splitting due to coupling with silver nuclei has been reported as well.…”

Synthesis of pentanuclear clusters derived from [Ru3RhH2(CO)10(PPh3)(µ-COMe)]. Crystal structures of [Ru3Rh2H2(CO)12(PPh3)2] and [Ru3RhAuH(CO)10(PPh3)2-(µ3-COMe)]

“…The general experimental procedures were as described in ref. 5, with the addition of fast atom bombardment mass spectrometry (FAB-MS) facilities now being employed on a VG7250-SE instrument using rn-nitrobenzyl alcohol as the matrix. The following compounds were prepared by established methods: (164 mg, 0.191 mmol) added followed by CH,Cl, (30 cm3) at -90 "C. The solution was allowed to warm to room temperature (30 min), evaporated to dryness, and the solid residue chromatographed on a silica column.…”

“…Table 1 provides a summary of crystal data and structure-solution details. The data refined to a final R = 0.033 {anisotropic (Rh, Ru, P, 0 and C) and isotropic (H) atoms, -0.085 2(5) 0.393 2 (7) -0.040 3(5) 0.367 6 (7) 0.046 3(5) -0.088 7 (5) 0.151 O(4) 0.009 l(6) 0.1 17 8(4) 0.088 9 (7) 0.081 O(5) 0.075 4 (7) 0.078 3(5) -0.019 6 (7) 0.109 7(5) -0.103 2 (7) 0.147 9( 5) -0.275 7 (5) 0.1 14 6(4) -0.316 9 (6) 0.093 3(5) -0.369 6 (7) 0.027 9(5) -0.344 3(7) 0.009 l(5) -0.288 8 (6) 0.072 5(5) -0.271 l(5) 0.279 9(4) -0.379 5 (6) 0.299 l(5) -0.434 l (7) 0.368 8(5) -0.382 8 (7) 0.417 l(5) -0.275 3 (6) 0.400 7(5) -0.219 7( 6 the residual electron density in the range 1.24 to -0.80 e k3.…”

Synthesis of triruthenium–rhodium tetranuclear clusters derived from [Ru3H3(CO)9(µ3-COMe)]. Crystal structure of [N(PPh3)2][Ru3RhH2(CO)11(PPh3)]·0.6C5H12

“…The general experimental procedures were as described in ref. 1 (3.00 g, 3.50 mmol). The required product immediately began to precipitate along with a white solid.…”

“…R' = 0.053, maximum A/CJ = 0.04). The residual electron density was in the range 0.82 to -0.63 e A-3, and the site occupancy of the pentane solvate molecule (n) refined to 0.60 (1). The absolute configuration of the crystal under study was examined by repeating the final calculation for the enantiomorph.…”