Structural, electron paramagnetic resonance and electron spin echo envelope modulation studies of oxovanadium(IV)-amidate compounds containing monoanionic axial ligands: effect on the V-51-hyperfine coupling constants

Authors
Tolis, EJ Soulti, KD Raptopoulou, CP Terzis, A Deligiannakis, Y Kabanos, TA
Citation
Ej. Tolis et al., Structural, electron paramagnetic resonance and electron spin echo envelope modulation studies of oxovanadium(IV)-amidate compounds containing monoanionic axial ligands: effect on the V-51-hyperfine coupling constants, CHEM COMMUN, (7), 2000, pp. 601-602
Citations number
13
Categorie Soggetti
Chemistry
Journal title
CHEMICAL COMMUNICATIONS
ISSN journal
13597345 → ACNP
Issue
7
Year of publication
2000
Pages
601 - 602
Database
ISI
SICI code
1359-7345(2000):7<601:SEPRAE>2.0.ZU;2-Y
Abstract
Reaction of the amidate ligand N-{2-[(2-pyridylmethylene)amino]phenyl}pyrid ine-2-carboxamide (Hcapca) with [VOCl2(thf)(2)] and MeONa in 1 : 1 : 1 mola r ratio in MeCN affords the compound trans-[VOCl(capca)] 1, while reaction of 1 with NEt4NCS, MeCO2NHEt3 and imidazole yields the complexes trans-[VO( NCS)(capca)] 2, trans-[VO(Me-CO2)(capca)] 3 and trans-[VO(im)(capca)](-) 4 respectively; the X-ray crystal structure of 1 is reported; Cw EPR studies of compounds 1-3 reveal a novel phenomenon of the reduction of their A(z) c omponents by ca. 10% compared to N-4 reference compounds.