Some nickel(II) complexes of N-(2-aminoethyl) heterocyclic derivatives
1971; Elsevier BV; Volume: 5; Linguagem: Inglês
10.1016/s0020-1693(00)95880-8
ISSN1873-3255
AutoresG. Contreras, E. Astigarrabia,
Tópico(s)Crystal structures of chemical compounds
ResumoA series of dichloro bis(N-2-aminoethyl heterocyclic derivatives) nickel(II) complexes have been prepared in which the cyclic substituents are piperazine, pyrrolidine, and morpholine. The spectral and magnetic data indicate that the complexes possess an octahedral structure. Derived ligand field parameters, 10Dq and B lead to the following order for the ligands in the spectrochemical and nephelauxetic series, respectively, NAPir >NAPiP>NAMor and NAPip>NAMor>NAPir. The variations of the ligand field parameters are discussed in terms of the metal-ligand π bonding. From i.r. spectra it can be inferred that the complexes possess an actual C2h symmetry.
Referência(s)