Structural and magnetic studies on mono- and polynuclear chromium ascorbate complexes

Birgül Zümreoglu-Karan; Ahmet N. Ay; Canan Ünaleroglu; Tezer Firat; Thomas Ristau; Wolfgang Jabs

doi:10.1007/s11243-005-1035-0

Structural and magnetic studies on mono- and polynuclear chromium ascorbate complexes

Birgül Zümreoglu-Karan
, Ahmet N. Ay
, Canan Ünaleroglu
, Tezer Firat
, Thomas Ristau
, Wolfgang Jabs

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Polynuclear chromium ascorbate complexes were isolated and physicochemically analyzed in a comparative manner with their mononuclear analog (1). Characterization by elemental analysis, electronic, vibrational, ¹³C-n.m.r and mass spectroscopies, and variable temperature magnetic susceptibility studies, allowed structural proposals for the binuclear, [Cr ₂(μ-OH)₂(H₂O)(C₆H ₇O₆)₃(OH)] • 4H₂O (2), and trinuclear, [Cr₃(μ-O)₃(H₂O) ₆(C₆H₇O₆)₃] • 4 H₂O (3) complexes. The pseudo-octahedral Cr ^III centers were suggested to be connected through hydroxo bridges in (2) and in (3) by oxo bridges forming a hexocyclic ring.

Original language	English
Pages (from-to)	451-459
Number of pages	9
Journal	Transition Metal Chemistry
Volume	30
Issue number	4
DOIs	https://doi.org/10.1007/s11243-005-1035-0
Publication status	Published - May 2005

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abstract = "Polynuclear chromium ascorbate complexes were isolated and physicochemically analyzed in a comparative manner with their mononuclear analog (1). Characterization by elemental analysis, electronic, vibrational, 13C-n.m.r and mass spectroscopies, and variable temperature magnetic susceptibility studies, allowed structural proposals for the binuclear, [Cr 2(μ-OH)2(H2O)(C6H 7O6)3(OH)] • 4H2O (2), and trinuclear, [Cr3(μ-O)3(H2O) 6(C6H7O6)3] • 4 H2O (3) complexes. The pseudo-octahedral Cr III centers were suggested to be connected through hydroxo bridges in (2) and in (3) by oxo bridges forming a hexocyclic ring.",

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T1 - Structural and magnetic studies on mono- and polynuclear chromium ascorbate complexes

AU - Zümreoglu-Karan, Birgül

AU - Ay, Ahmet N.

AU - Ünaleroglu, Canan

AU - Firat, Tezer

AU - Ristau, Thomas

AU - Jabs, Wolfgang

PY - 2005/5

Y1 - 2005/5

N2 - Polynuclear chromium ascorbate complexes were isolated and physicochemically analyzed in a comparative manner with their mononuclear analog (1). Characterization by elemental analysis, electronic, vibrational, 13C-n.m.r and mass spectroscopies, and variable temperature magnetic susceptibility studies, allowed structural proposals for the binuclear, [Cr 2(μ-OH)2(H2O)(C6H 7O6)3(OH)] • 4H2O (2), and trinuclear, [Cr3(μ-O)3(H2O) 6(C6H7O6)3] • 4 H2O (3) complexes. The pseudo-octahedral Cr III centers were suggested to be connected through hydroxo bridges in (2) and in (3) by oxo bridges forming a hexocyclic ring.

AB - Polynuclear chromium ascorbate complexes were isolated and physicochemically analyzed in a comparative manner with their mononuclear analog (1). Characterization by elemental analysis, electronic, vibrational, 13C-n.m.r and mass spectroscopies, and variable temperature magnetic susceptibility studies, allowed structural proposals for the binuclear, [Cr 2(μ-OH)2(H2O)(C6H 7O6)3(OH)] • 4H2O (2), and trinuclear, [Cr3(μ-O)3(H2O) 6(C6H7O6)3] • 4 H2O (3) complexes. The pseudo-octahedral Cr III centers were suggested to be connected through hydroxo bridges in (2) and in (3) by oxo bridges forming a hexocyclic ring.

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ER -

Structural and magnetic studies on mono- and polynuclear chromium ascorbate complexes

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