91782-13-7Relevant academic research and scientific papers
Lewis acid bonding to triruthenium and triosmium clusters. The crystal and molecular structure of Ru3(μ-Ph2PCH2PPh2) 2(CO)8(μ-AgO2CCF 3)?1/2CH2Cl2 and spectroscopic studies of related adducts
Ladd, Judith A.,Hope, Hakon,Balch, Alan L.
, p. 1838 - 1846 (2008/10/08)
Ru3(μ-dpm)2(CO)8 (dpm is bis(diphenylphosphino)methane) forms weakly bound adducts Ru3(μ-dpm)2(CO)8?(μ-A) (A = AgO2CCF3, Hg(O2CCF3)2, Cu(NCCH3)BF4, HO2CCF3) that have been characterized by electronic, infrared, and 31P NMR spectroscopy. Equilibrium constants for adduct formation increase in the order H+ + 2+ +. Ru3(μ-dpm)2(CO)8(μ-AgO 2CCF3)·1/2CH2Cl2 crystallizes in the orthorhombic space group Pca21 (No. 29) with four molecules per unit cell of dimensions a = 20.706 (9) A?, b = 15.693 (11) A?, and c = 18.447 (5) A? at 140 K. The structural study shows that the AgO2CCF3 unit binds through silver across the exposed edge of the triruthenium cluster. The adduct contains two adjacent, nearly coplanar triangles of the four metal atoms. The addition of Ag+ to the Ru-Ru bond results in an 0.167 A? lengthening of the Ru-Ru separation and some bending of the in-plane carbonyl groups away from the silver binding site. Similar adducts of silver trifluoroacetate with Ru3(CO)12, Os3(CO)12, and some substituted derivations of Ru3(CO)12 have been detected in solution.
