Allan White and Solvento/Aqua Complexes: ScIII Solvation

摘要: Addition of various oxygen-donor ligands (L, all dipolar, aprotic solvents), to a solution hydrated scandium picrate in weakly coordinating solvents (S), has yielded several crystalline adducts the form Sc(pic)3(L)m(·nS) which L are coordinated, subsequently characterised by series single crystal X-ray studies. For L = dmso, m = 3 and anions bound as phenoxide-O donor units, while for nmp, dma, tmp, hmpa, m = 2 one picrates becomes bidentate through phenoxide- nitro-O donation. L = ompa, two is displaced from primary coordination sphere. All complexes contain six-coordinate ScIII, confirming that this number consequence ligand bulk.