SOME NEW AMIDE COMPLEXES OF THORIUM TETRABROMIDE

The complexes ThBr multiplied by (times) chi L( chi equals 2, L EQUVLNT CH//3CON(cyclo-C//6H//1//1)//2 (dca), CH//3CON(i-C//3H//7)//2 (dipa), C//2H//5CON(i-C//3H//7)//2 (dippa), (CH//3)//2CHCON(i-C//3H//7)//2 (dipiba), (CH//3)//3CCON(i-C//3H//7)//2 (dippva), (CH//3)//2CHCON(CH//3)//2 (dmiba) and (CH//3)//3CCON(CH//3)//2 (dmpva); chi equals 3, L EQUVLNT dca, C//2H//5CON(CH//3)//2 (dmpa), C//2H//5CON(C//2H//5)//2 (depa)), dipa, dippa, dipiba, dmiba and ThBr//4 multiplied by (times) 2dca multiplied by (times) thf (thf EQUVLNT tetrahydrofuran) were prepared. The IR spectra of the complexes are reported and their stoichiometries are discussed in terms of steric crowding about the metal atom using a cone-packing model.