Ph3PSe as a convenient synthon for one-step syntheses of Ph3P-substituted selenido carbonyl iron and ruthenium clusters. Crystal structures of Fe3(μ3-Se)(μ-CO)(CO)7(PPh3)2, M3(μ3-Se)2(CO)7(Pph3)2 (MFe or Ru) and Ru4(μ4-Se)2(μ-CO)2(CO)7(PPh3)2

Novel approach to separation and identification of organometallic compounds in complex mixtures by means of particle beam liquid chromatography/mass spectrometry: the case of diphosphine-substituted selenido iron and ruthenium clusters

“…(a) dppmSe 2 Fe 3 (CO) 12 : Fe 3 (m 3 -Se) 2 (CO) 9 (1, M r 578); Fe(CO) 4 12 : Ru 3 (m 3 -Se) 2 (CO) 7 dppe (13, M r 1055) and some decomposition products.…”

“…Reaction of (Ph 2 PSe) 2 R with M 3 (CO) 12 Under the conditions previously described, [4][5][6][7] the reaction between (Ph 2 PSe) 2 R with M 3 (CO) 12 gave the following products, in order of elution on TLC silica plates:…”

“…The reactions, the characterization data and the description of the steric features of the iron-selenido and ruthenium-selenido clusters have been already published. [4][5][6][7] The mass spectral data and the liquid chromatographic (HPLC) behaviour of the selenido clusters derived from PPh 3 Se have been discussed in a previous work. 5 The present paper deals with the particle beam (PB) liquid chromatography/mass spectrometry (LC/MS) characterization of the diphosphine-substituted selenido iron and ruthenium clusters in order to show the effectiveness of this hyphenated technique for the separation and on-line characterization of complex mixtures of organometallic compounds.…”

Cluster Growth Reactions with Selenido‐Carbonyl Clusters − Synthesis, Characterisation and Theoretical Study of the Dimetallic closo Clusters [WRu3(μ4‐Se)2(μ‐CO)4(CO)6(L)2] (L = Phosphane) and of the Donor‐Acceptor Adduct [(CO)5W(μ4‐Se)Ru3(μ3‐Se)(CO)7{P(CH2Ph)Ph2}2]

“…[1Ϫ9] These reactions take advantage of the frailty of the PϭSe bond and provide a simple, sometimes selective, [2] synthetic route to phosphanesubstituted, mono-and diselenido clusters. When the starting phosphane contains heterocyclic groups, such as the 2-pyridyl and 2-thienyl moieties, PϪC bond cleavage is observed, affording selenido-phosphido clusters coordinating to heterocyclic fragments.…”

“…cluster growth reactions between preformed chal-with the fragment W(CO) 5 through a selenido ligand. DFT calculations, performed on the model species [WRu 3 (µ 4 -Se) 2 (µ-CO) 4 (CO) 6 cogenide metal clusters and suitable organometallic fragments.…”