Oxovanadium(IV)-Amide Binding. Synthetic, structural and physical studies of Bis{N-[2-(4-oxopentan-2-ylideneamino) phenyl]pyridine-2-carboxamido} oxovanadium(IV) and Bis{N-[2-(4-phenyl-4-oxobutan-2-ylideneamino)phenyl]pyridine-2-carboxamido} oxovanadium(I

Hanson, Graeme R., Kabanos, Themistoklis A., Keramidas, Anastasios D., Mantzafos, Dimitris and Terzis, Aris (1992) Oxovanadium(IV)-Amide Binding. Synthetic, structural and physical studies of Bis{N-[2-(4-oxopentan-2-ylideneamino) phenyl]pyridine-2-carboxamido} oxovanadium(IV) and Bis{N-[2-(4-phenyl-4-oxobutan-2-ylideneamino)phenyl]pyridine-2-carboxamido} oxovanadium(IV). Inorganic Chemistry, 31 12: 2587-2594. doi:10.1021/ic00038a051


Author Hanson, Graeme R.
Kabanos, Themistoklis A.
Keramidas, Anastasios D.
Mantzafos, Dimitris
Terzis, Aris
Title Oxovanadium(IV)-Amide Binding. Synthetic, structural and physical studies of Bis{N-[2-(4-oxopentan-2-ylideneamino) phenyl]pyridine-2-carboxamido} oxovanadium(IV) and Bis{N-[2-(4-phenyl-4-oxobutan-2-ylideneamino)phenyl]pyridine-2-carboxamido} oxovanadium(IV)
Journal name Inorganic Chemistry
ISSN 020-1669
Publication date 1992-06
Sub-type Article (original research)
DOI 10.1021/ic00038a051
Volume 31
Issue 12
Start page 2587
End page 2594
Total pages 8
Place of publication Easton, PA.
Publisher American Chemical Society
Language eng
Subject 030201 Bioinorganic Chemistry
Abstract The complexes [VO(pycac)] and [VO(pycbac)] were prepared by the reaction of bis(pentane-2,4-dionato)oxovanadium(IV) with either N-[2-(4-oxopent-2-en-2-ylamino)phenyl]pyridine-2-carboxamide (H2pycac) or N-[2-(4-phenyloxobut-2-en-2-ylamino)-phenyl]pyridine-2-carboxamide (H2pycbac) in a methanolic solution. Crystals of [VO(pycac)] crystallized from nitromethane were monoclinic, space group P21/n with a = 7.5938 (1) Å, b = 30.161 (1) Å, c = 13.6982 (2) Å, β = 86.468 (1)°, Z = 8, and Rw = 5.39%. Crystallization of [VO(pycac)] from chlorobenzene yielded triclinic crystals with a space group P1 and a = 7.8558 (5) Å, b = 12.934 (1) Å, c = 15.675 (1) Å, α = 78.594 (2)°, β = 89.938 (2)°, γ = 88.097 (2)°, Z = 4, and Rw = 6.45%. [VO(pycbac)] crystals were monoclinic, space group P21/c with a = 6.5422 (4) Å, b = 14.4786 (8) Å, c = 19.963 (1) Å, β = 93.461 (2)°, Z = 4, and Rw = 3.80%. The geometry about vanadium in each structure approximates a square pyramid with an average V=O bond length of 1.595 Å with the metal ion 0.669 Å above the basal plane. The average V-N(pyridine), V-N(amine), V-N(amide), and V-O bond lengths are 2.100, 2.045, 1.981, and 1.916 Å, respectively. The V-N(amide) and V-O bond lengths constitute rare examples of such short V-N and V-O distances that have been reported for oxovanadium(IV) complexes to date. In addition to the synthesis and crystallographic studies, we report the optical, infrared, magnetic, electron paramagnetic resonance, and electrochemical properties of these complexes. This study represents the first systematic study of oxovanadium containing a vanadium-amide bond. © 1992 American Chemical Society.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Advanced Imaging Publications
 
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