MOLECULAR-STRUCTURE AND CHARGE-DISTRIBUTION IN COMPOUNDS OF THE 5F-ELEMENTS .6. 1 1 ADDUCTS OF ROTRIS(3,5-DIMETHYLPYRAZOL-1-YL)BORATE-TRICHLORIDE WITH LEWIS-BASES/
R. Maier et al., MOLECULAR-STRUCTURE AND CHARGE-DISTRIBUTION IN COMPOUNDS OF THE 5F-ELEMENTS .6. 1 1 ADDUCTS OF ROTRIS(3,5-DIMETHYLPYRAZOL-1-YL)BORATE-TRICHLORIDE WITH LEWIS-BASES/, Polyhedron, 12(23), 1993, pp. 2801-2808
The 1:1 adducts Of UCl3[HB(3,5-Me2Pz)3] with thf. pyridine (NC5H5), ac
etonitrile (MeCN), benzonitrile (PhCN), cyclohexylisocyanide (C6H12NC)
, triethylphosphate (tep), tributylphosphate (tbp) and triphenylphosph
ine oxide (tppo) have been prepared and characterized. The structure o
f the tep compound was determined by single-crystal X-ray analysis. Th
e charge distribution within the molecules was determined and its corr
elation with spectroscopic data is discussed. The relative affinity of
the Lewis base to the uranium central ion was determined by base exch
ange reactions and found to be tppo > RNC > RCN > tep > tbp > NC5H5 >
thf.