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Title: Neutral catecholate derivatives of manganese and iron: Synthesis and characterization of the metal-oxygen cubane-like species M sub 4 (DBCat) sub 4 (py) sub 6 (M = Mn, Fe), the trinuclear complex Mn sub 3 (DBCat) sub 4 (py) sub 4 , and the dimers M sub 2 (DBCat) sub 2 (py) sub n (M = Mn, n = 6; M = Fe, n = 4, 6)

Journal Article · · Inorganic Chemistry; (United States)
DOI:https://doi.org/10.1021/ic00032a016· OSTI ID:6967328
;  [1]
  1. Univ. of California, Davis (United States)
+ Show Author Affiliations

The synthesis and characterization of several new catecholate derivatives of manganese and iron are described. The reaction of 3,5-di-tert-butylcatechol (DBCatH{sub 2}) with the amides M(N(SiMe{sub 3}){sub 2}){sub 2} (M = Mn, Fe) in the presence of pyridine (py) affords the title compounds in high yield. The dimers Mn{sub 2}(DBCat){sub 2}(py){sub 6} (1) and Fe{sub 2}(DBCat){sub 2}(py){sub n} (n = 4 (4a), 6 (4b)) are obtained by treatment of catechol with the appropriate amide in pyridine. In hexane or toluene, this reaction gives the tetrametallic species M{sub 4}(DBCat){sub 4}(py){sub 6} (M = Mn (2), Fe (5)) upon the addition of 2 equiv of pyridine or, in the case of 2, by recrystallization of the dimer from toluene. Mn{sub 3}(DBCat){sub 4}(py){sub 4} (3) is obtained by slow air oxidation of 2 or by addition of 1/3 equiv of 3,5-di-tert-butyl-o-benzoquinone to the reaction of Mn(N(SiMe{sub 3}){sub 2}){sub 2} with DBCatH{sub 2} in hexane with subsequent addition of pyridine. Compounds 1-5 were characterized by infrared, UV-visible, {sup 1}H NMR, and EPR spectroscopy and X-ray crystallography.

OSTI ID:
6967328
Journal Information:
Inorganic Chemistry; (United States), Vol. 31:6; ISSN 0020-1669
Country of Publication:
United States
Language:
English

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Related Subjects

14 SOLAR ENERGY
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
IRON COMPLEXES
CHEMICAL PREPARATION
MANGANESE COMPLEXES
AMIDES
BOND ANGLE
BOND LENGTHS
CHEMICAL REACTION KINETICS
CRYSTAL STRUCTURE
DERIVATIZATION
DIMERS
ELECTRON SPIN RESONANCE
ELECTRON TRANSFER
INFRARED SPECTRA
LIGANDS
NMR SPECTRA
OXIDATION
PHOTOCHEMICAL REACTIONS
PYRIDINES
PYROCATECHOL
RECRYSTALLIZATION
TRIGONAL LATTICES
ULTRAVIOLET SPECTRA
X-RAY DIFFRACTION
AROMATICS
AZINES
CHEMICAL REACTIONS
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
DEVELOPERS
DIFFRACTION
DIMENSIONS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
KINETICS
LENGTH
MAGNETIC RESONANCE
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHENOLS
POLYPHENOLS
REACTION KINETICS
RESONANCE
SCATTERING
SPECTRA
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
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