caa a22 4500 467952167 CHVBK 20180405193743.0 cr unu---uuuuu 170328e20040901xx s 000 0 eng 10.1007/s11243-003-5580-0 doi (NATIONALLICENCE)springer-10.1007/s11243-003-5580-0 (NATIONALLICENCE)springer-10.1007/s11243-004-5580-0 Synthesis and spectroscopic studies of oxovanadium(IV) and dichlorovanadium(IV) complexes of p- X-phenyl-2-picolylketones [Elektronische Daten] [Bakir Jeragh, Ali El-dissouky] A new series of oxovanadium(IV) complexes formulated as [(HL)2VO]n·nSO4 (a), [(HL)VO(SO4)]2 (b), and [L2VO] (c), where HL=phenyl-2-picolylketone and its para-substituted derivatives have been synthesized and characterized. The i.r. data suggest that the ligands are neutral bidentate in classes (a) and (b) and uninegative bidentate in (c), coordinated to the vanadyl ion via the pyridine-N and keto- or enolato-O atoms. Complexes of class (a) showed mechanochromism upon grinding. Magnetic, u.v./vis. and e.s.r. data suggest that all the complexes have a square pyramidal structure with an unpaired electron in the dxy orbital in the solid and in solutions. Deoxygenation of the oxovanadium complexes gave the corresponding dichlorovanadium(IV) derivatives. Elemental analysis, magnetic and spectral studies indicated that the dichlorovanadium(IV) complexes are associated with a distorted trans-octahedral ligand field. Kluwer Academic Publishers, 2004 Jeragh Bakir Chemistry Department, Faculty of Science, Kuwait University, 5969, 13060, Safat, State of Kuwait aut El-dissouky Ali Chemistry Department, Faculty of Science, Kuwait University, 5969, 13060, Safat, State of Kuwait aut Transition Metal Chemistry Kluwer Academic Publishers 29/6(2004-09-01), 579-585 0340-4285 29:6<579 2004 29 11243 https://doi.org/10.1007/s11243-003-5580-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11243-003-5580-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jeragh Bakir Chemistry Department, Faculty of Science, Kuwait University, 5969, 13060, Safat, State of Kuwait aut NATIONALLICENCE 700 1- El-dissouky Ali Chemistry Department, Faculty of Science, Kuwait University, 5969, 13060, Safat, State of Kuwait aut NATIONALLICENCE 773 0- Transition Metal Chemistry Kluwer Academic Publishers 29/6(2004-09-01), 579-585 0340-4285 29:6<579 2004 29 11243 NATIONALLICENCE 700 1- Jeragh Bakir Chemistry Department, Faculty of Science, Kuwait University, 5969, Safat, 13060, State of Kuwait aut NATIONALLICENCE 700 1- El-dissouky Ali Chemistry Department, Faculty of Science, Kuwait University, 5969, Safat, 13060, State of Kuwait aut NATIONALLICENCE 856 40 https://doi.org/10.1007/s11243-004-5580-0 text/html Onlinezugriff via DOI Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE NATIONALLICENCE NL-springer