论文信息 - Reaction of carbon monoxide with the coordinately unsaturated metal dimer (. mu. -H)/sub 2/Rh/sub 2/(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/ with retention of dimeric form. Crystal and molecular structure of Rh/sub 2/(. mu. -CO)/sub 2/(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/

Reaction of carbon monoxide with the coordinately unsaturated metal dimer (. mu. -H)/sub 2/Rh/sub 2/(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/ with retention of dimeric form. Crystal and molecular structure of Rh/sub 2/(. mu. -CO)/sub 2/(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/

The chemistry of (..mu..-H)/sub 2/Rh/sub 2/(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/ with carbon monoxide is described. One equivalent of carbon monoxide irreversibly converted the dimer to (..mu..-H)/sub 2/Rh/sub 2/(..mu..-CO)(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/. The latter transformed slowly in solution to generate Rh/sub 2/(..mu..-CO)/sub 2/(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/ and a second species presumed to be a hydride. The 30-electron Rh/sub 2/(..mu..-CO)/sub 2/(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/ dimer reacted reversibly with carbon monoxide to give Rh/sub 2/(..mu..-CO)/sub 2/(CO)/sub 2/(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/; no fragmentation to mononuclear metal complexes in this reaction system was observed up to 70/sup 0/C. Excess carbon monoxide did however elicit a fragmentation of the 30-electron complex, (..mu..-H)/sub 2/Rh/sub 2/(..mu..-CO)(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 4/. Reaction was rapid to give HRh(CO)(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 3/ and HRh(CO)/sub 2/(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 2/. The chemical and dynamic solution properties of these two mononuclear species is described; the properties of HRh(CO)(P(0-i-C/sub 3/H/sub 7/)/sub 3/)/sub 3/ diverge sharply for uranium and 16 other elements in sediments, and for uranium and 9 other elements in ground water. Mass spectrometry results are given for helium in ground water. Field measurements and observations are reported for each site. Analytical data and field measurements are presentedmore » in tables and maps. Uranium concentrations in the sediments which were above detection limits ranged from 0.10 t 51.2 ppM. The mean of the logarithms of the uranium concentrations was 0.53. A group of high uranium concentrations occurs near the junctions of quadrangles AB, AC, BB, a 200 mK. In case 2), x-ray studies of isotopic phase separation in /sup 3/He--/sup 4/He bcc solids were carried out by B. A. Fraass.« less

E. Muetterties | Jack M. Williams | A. Schultz | E. Gebert | R. Burch

[1] E. Muetterties,et al. Reaction of carbon monoxide with the coordinately unsaturated metal dimer (.mu.-H)2Rh2[P(O-i-C3H7)3]4 with retention of dimeric form. Crystal and molecular structure of Rh2(.mu.-CO)2[P(O-i-C3H7)3]4 , 1981 .