Metal cluster group-11 metals

Dinuclear Pt complexes of the type [ Pt(PR3) 2(p-S)2] are also known to serve as the good precursors to the trinuclear clusters. A series of triangular cluster cores M Pt2(p3-S)2 has been constructed therefrom (M = transition metals, main-group metals).50... 

PPha, pyridine) organic groups (olefines, aromatic derivatives) and also form other derivatives, e.g. halides, hydrides, sulphides, metal cluster compounds Compounds containing clusters of metal atoms linked together by covalent (or co-ordinate) bands, metaldehyde, (C2H40) ( = 4 or 6). A solid crystalline substance, sublimes without melting at I12 1I5" C stable when pure it is readily formed when elhanal is left in the presence of a catalyst at low temperatures, but has unpredictable stability and will revert to the monomer, ft is used for slug control and as a fuel. 

Structure of the MoFe Protein. Extensive spectroscopic studies of the MoEe proteia, the appHcation of cluster extmsion techniques (84,151), x-ray anomalous scattering, and x-ray diffraction (10,135—137,152) have shown that the MoEe proteia contains two types of prosthetic groups, ie, protein-bound metal clusters, each of which contains about 50% of the Ee and content. Sixteen of the 30 Ee atoms and 14—16 of the 32—34... 

Main Group Element Metallaboranes. A variety of metaHaborane clusters, which incorporate main group metals in vertex positions of polyhedral metaHaborane clusters, have been reported. Examples are (BH BeB H Q (165), MgB2QH22 20(C2H )2 (166), [(CH2)HgB2QH22]A (167),... 

Replacement of a (BH) unit in B5H9 by an isoelectronic organometallic group such as (Fe(CO)3 or (Co( j -C5H5)) can also occur, and this illustrates the close interrelation between metalloboranes, metal-metal cluster... 

Heavier Group 13 M—M Multiple Bonding in Reduced Metal Cluster Species... 

F(Ci. 46. Syniliescs of group 6-group 9 tclranuclear clusters by metal exchange. 

Fid. 47, Syntheses of group 6-groiip lO Iciranuclear clusters by metal exchange. 

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