Inorganic Chemistry, Vol.39, No.18, 4152-4155, 2000
Synthesis and molecular structure of a plutonium(IV) coordination complex: [Pu(NO3)(2){2,6-[(C6H5)(2)P(O) CH2](2)C5H3NO}(2)](NO3)(2)center dot 1.5H(2)O center dot 0.5MeOH
The trifunctional ligand 2,6-[(C6H5)(2)P(O)CH2](2) C5H3NO (1), in a mixed EtOH/MeOH solvent system, when combined with an aqueous nitric acid solution of Pu(IV), produces a 2:1 coordination complex, [PU(1)(2)(NO3)(2)]- (NO3)(2) A single crystal of [Pu(NO3)(2){2,6-[(C6H5)(2)P(O)CH2](2)C5H3NO}(2)](NO3)(2). 1.5H(2)O . 0.5MeOH was characterized by X-ray diffraction analysis. The crystal is monoclinic, space group P2(1)/n, with a = 19.1011(9) Angstrom, b = 18.2873(9) Angstrom, c = 21.507(1) Angstrom, alpha = gamma = 90 degrees, beta = 108.63(1)degrees, and Z = 4. Two neutral ligands (1) are bonded to the Pu(IV) ion in a tridentate fashion. Two nitrate ions also occupy inner sphere coordination positions, while two additional NO3- ions reside in the outer sphere. Comparison of the solution optical absorbance and solid diffuse reflectance spectra shows the same Pu(IV) chromophore exists in both solid and solution states.