Synthesis and characterization of vanadium(V) complexes with alpha-hydroxyhippuric acid. The X-ray crystal structure of (NBu4)2[V2O2(O2)2(R-alpha-hhip) (S--hhip)].5H2O,[alpha-hhip = alpha-hydroxyhippurato(2-)]

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Authors

AHMED M. SCHWENDT P. SIVÁK M. MAREK Jaromír

Year of publication 2004
Type Article in Periodical
Magazine / Source Transition Metal Chemistry
MU Faculty or unit

Faculty of Science

Citation
Field Inorganic chemistry
Keywords Peroxovanadium(V); X-ray structure; NMR; hydroxyhippuric acid
Description Peroxovanadium(V) complexes of alpha-hydroxyhippuric acid (alpha-H2hhip), M2[V2O2(O2)2(alpha-hhip)2].nH2O, [M=K+(1), NH4+(2), NEt4+(3), NBu4+(4); n=5.5, 3, 8, 5) have been prepared and characterized by elemental analysis, i.r., u.v.-vis. and 51V-n.m.r. spectroscopies and by thermal analysis. The X-ray structure determination of (4) revealed the presence of dinuclear [V2O2(O2)2(R-alpha-hhip)(S-alpha-hhip)]2- anions with a planar V2O2 bridging core and seven-coordinated central atoms. The coordination geometry of the vanadium atom is a distorted pentagonal bipyramid.
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