Oxo- und Non-oxovanadium(IY)-Komplexe mit Oxy-Carboxylaten als Liganden, und die Struktur von VCl2(salen) / Oxo and Non-oxovanadium(IV) Complexes with Oxy-Carboxylate Ligands, and the Structure of VCl2(salen)

V0 forms complexes of composition VO(L )EtOH), VO(HL and VO(HL )(H O) with the ithium or sodium salts of 6-droxymethyl-pyridine-2-arboxylic acid (H ) and 4,8-hydroxyquinoline-2-carboxylic acid (H ). VCl (salen/salphen) and VCl (napgly/ nappa) (napgly and nappa are the Schiff bases derived from o-ydroxynaphthaldehyde and glycine or phenylalanine, respectively), prepared from the oxo precursor and SOCl , react with Li and the lithium salts of benzilic acid (H ) and ortho-ydroxybenzoic acid (H ) to yield the non-oxo (“bare”) complexes V(salen)L , V(salen)L , V(salphen)L , V(salen)L , V(napgly)L , V(nappa)L , and V(nappa)L . The complexes have been characterized by IR, EPR and elemental analyses. VOCl (salen) crystallizes in the monoclinic space group Cc, a = 14.579(3), b = 9.537(2), c = 13.453(3) Å, β=120.92(3)°. The molecule exhibits gross distor­tions from octahedral geometry. An improved synthesis for H is described.