Synthesis, solution and crystal structures of dinuclear
vanadium(V) oxo monoperoxo complexes with mandelic acid:
(NR4)2[V2O2(O2)2(mand)2] . xH2O [R=H, Me, Et;
MAND=mandelato(2-)=C8H6O3 2-]

J 2004

Synthesis, solution and crystal structures of dinuclear vanadium(V) oxo monoperoxo complexes with mandelic acid: (NR4)2[V2O2(O2)2(mand)2] . xH2O [R=H, Me, Et; MAND=mandelato(2-)=C8H6O3 2-]

AHMED, M.; P. SCHWENDT; Jaromír MAREK a M. SIVÁK

Základní údaje

Originální název

Synthesis, solution and crystal structures of dinuclear vanadium(V) oxo monoperoxo complexes with mandelic acid: (NR4)2[V2O2(O2)2(mand)2] . xH2O [R=H, Me, Et; MAND=mandelato(2-)=C8H6O3 2-]

Název česky

Syntéza, roztok a krystal. struktura 2jaderného oxo-peroxovanadičnatého komplexu s kyselinou mandelátovou: (NR4)2[V2O2(O2)2(mand)2] . xH2O [R=H, Me, Et; MAND=mandelato(2-)=C8H6O3 2-].

Autoři

AHMED, M.; P. SCHWENDT; Jaromír MAREK a M. SIVÁK

Vydání

Polyhedron, Velká Británie, PERGAMON-ELSEVIER SCIENCE LTD, OXFORD, 2004, 0277-5387

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 1.586

Kód RIV

RIV/00216224:14310/04:00009932

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000189216400021

Klíčová slova anglicky

Crystal structure; IR spectra; 51V NMR spectra;Vanadium(V) peroxo mandelato complex;

Štítky

51V NMR spectra, Crystal Structure, IR spectra, Vanadium(V) peroxo mandelato complex

Změněno: 10. 2. 2005 13:54, doc. RNDr. Jaromír Marek, Ph.D.

Anotace

ORIG CZ

V originále

Vanadium(V) oxo peroxo mandelato complexes were prepared from aqueous solution and characterized by elemental analysis, IR, UV-Vis and 51V NMR spectroscopies. The single crystal X-ray studies of (NMe4)2[V2O2 (O2)2(R,S-mand)2].6.5H2O (3), (NMe4)(NH4)[V2O2(O2)2(R,S-mand)2].2H2O (4) and (NEt4)2[V2O2(O2)2(R-mand)2] (8) revealed that the mandelato ligand behaves as a bidentate chelator adopting the (O-, COO-) donor set. The complex anions in structures of 3 and 8 contain a dinuclear V2O2 core with cyclic arrangement of two vanadium atoms and two hydroxyl oxygen atoms from the bridging mand ligands. Each vanadium atom is coordinated by six oxygen atoms arising from two hydroxyl and one carboxyl groups, 2-peroxo ligand and one end-bonded oxo ligand. The coordination polyhedron can be described as distorted pentagonal pyramid. The structure of 4 is unique as it contains in the unit cell differently coordinated water molecules in two types of dinuclear anions: [V2O2(O2)2(R-mand)2(H2O)]2-, with nearly symmetrically bonded bridging water molecule and pentagonal bipyramidal arrangement arround both vanadium atoms, and [V2O2(O2)2(S-mand)2(H2O)]2-, with the water molecule coordinated only to one vanadium atom. The vanadium atoms thus have different coordination geometries: pentagonal pyramidal and pentagonal bipyramidal, the latter exhibiting a better planarity of the fitted atoms of the pentagonal plane and a smaller deviation of the vanadium atom from this plane.

Česky

2jaderný oxo-peroxovanadičnatý komplex s kyselinou mandelátovou byl připraven z vodného roztoku a charakterizován element. analýzou, IR, UV-Vis, 51V NMR a rtg. strukturní analýzou.

Návaznosti

MSM 143100008, záměr

Název: Genomy a jejich funkce

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Genomy a jejich funkce

Citovat

AHMED, M.; P. SCHWENDT; Jaromír MAREK a M. SIVÁK. Synthesis, solution and crystal structures of dinuclear vanadium(V) oxo monoperoxo complexes with mandelic acid: (NR4)2[V2O2(O2)2(mand)2] . xH2O [R=H, Me, Et; MAND=mandelato(2-)=C8H6O3 2-]. Polyhedron. Velká Británie: PERGAMON-ELSEVIER SCIENCE LTD, OXFORD, 2004, roč. 23, č. 4, s. 655-663. ISSN 0277-5387.

@article{493018,
   author = {Ahmed, M. and Schwendt, P. and Marek, Jaromír and Sivák, M.},
   article_location = {Velká Británie},
   article_number = {4},
   keywords = {Crystal structure; IR spectra; 51V NMR spectra;Vanadium(V) peroxo mandelato complex;},
   language = {eng},
   issn = {0277-5387},
   journal = {Polyhedron},
   title = {Synthesis, solution and crystal structures of dinuclear vanadium(V) oxo monoperoxo complexes with mandelic acid: (NR4)2[V2O2(O2)2(mand)2] . xH2O [R=H, Me, Et; MAND=mandelato(2-)=C8H6O3 2-]},
   volume = {23},
   year = {2004}
}

TY  - JOUR
ID  - 493018
AU  - Ahmed, M. - Schwendt, P. - Marek, Jaromír - Sivák, M.
PY  - 2004
TI  - Synthesis, solution and crystal structures of dinuclear vanadium(V) oxo monoperoxo complexes with mandelic acid: (NR4)2[V2O2(O2)2(mand)2] . xH2O [R=H, Me, Et; MAND=mandelato(2-)=C8H6O3 2-]
JF  - Polyhedron
VL  - 23
IS  - 4
SP  - 655-663
EP  - 655-663
PB  - PERGAMON-ELSEVIER SCIENCE LTD, OXFORD
SN  - 02775387
KW  - Crystal structure
KW  - IR spectra
KW  - 51V NMR spectra;Vanadium(V) peroxo mandelato complex;
N2  - Vanadium(V) oxo peroxo mandelato complexes were prepared from aqueous solution and characterized by elemental analysis, IR, UV-Vis and 51V NMR spectroscopies. The single crystal X-ray studies of (NMe4)2[V2O2 (O2)2(R,S-mand)2].6.5H2O (3), (NMe4)(NH4)[V2O2(O2)2(R,S-mand)2].2H2O (4) and (NEt4)2[V2O2(O2)2(R-mand)2] (8) revealed that the mandelato ligand behaves as a bidentate chelator adopting the (O-, COO-) donor set. The complex anions in structures of 3 and 8 contain a dinuclear V2O2 core with cyclic arrangement of two vanadium atoms and two hydroxyl oxygen atoms from the bridging mand ligands. Each vanadium atom is coordinated by six oxygen atoms arising from two hydroxyl and one carboxyl groups, 2-peroxo ligand and one end-bonded oxo ligand. The coordination polyhedron can be described as distorted pentagonal pyramid. The structure of 4 is unique as it contains in the unit cell differently coordinated water molecules in two types of dinuclear anions: [V2O2(O2)2(R-mand)2(H2O)]2-, with nearly symmetrically bonded bridging water molecule and pentagonal bipyramidal arrangement arround both vanadium atoms, and [V2O2(O2)2(S-mand)2(H2O)]2-, with the water molecule coordinated only to one vanadium atom. The vanadium atoms thus have different coordination geometries: pentagonal pyramidal and pentagonal bipyramidal, the latter exhibiting a better planarity of the fitted atoms of the pentagonal plane and a smaller deviation of the vanadium atom from this plane.
ER  -

AHMED, M.; P. SCHWENDT; Jaromír MAREK a M. SIVÁK. Synthesis, solution and crystal structures of dinuclear vanadium(V) oxo monoperoxo complexes with mandelic acid: (NR4)2[V2O2(O2)2(mand)2] . xH2O [R=H, Me, Et; MAND=mandelato(2-)=C8H6O3 2-]. \textit{Polyhedron}. Velká Británie: PERGAMON-ELSEVIER SCIENCE LTD, OXFORD, 2004, roč.~23, č.~4, s.~655-663. ISSN~0277-5387.

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