Preparation and structural characterization of nitrosyl complexes of ferric porphyrinates. Molecular structure of aquonitrosyl(meso-tetraphenylporphinato)iron(III) perchlorate and nitrosyl(octaethylporphinato)iron(III) perchlorate

Scheidt, W. Robert; Lee, Young Ja; Hatano, Keiichiro

doi:10.1021/ja00323a022

Cited by 113 publications

(121 citation statements)

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“…The first is consistent with the cationic nitrosonium adduct, Mn I (TPP)(NO + ), the latter with that of the nitroxyl complex Co III (TPP)(NO À ), while the adduct with Fe II (TPP) is intermediate and has substantial radical character on the NO ligand. Single-electron oxidation of Fe II (TPP)(NO) gives the {FeNO} 6 system, as predicted a linear nitrosonium adduct [58]; likewise, ferrous heme nitroxyl adducts {FeNO} 8 are predicted to be highly bent, ca. 120°.…”

Section: The Enemark/feltham Bonding Extremementioning

confidence: 90%

Coordination chemistry of the HNO ligand with hemes and synthetic coordination complexes

Farmer

Sulc

2005

Journal of Inorganic Biochemistry

138

179

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Section: The Enemark/feltham Bonding Extremementioning

confidence: 90%

Coordination chemistry of the HNO ligand with hemes and synthetic coordination complexes

Farmer

Sulc

2005

Journal of Inorganic Biochemistry

138

179

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“…[8]. This method lead, in our lab, to better results (in terms of [15,[30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] for Fe 3+ (NO) complexes; Refs. [15,17,18,35,[47][48][49][50][51][52] for Fe 2+ (NO); Refs.…”

Section: Comparison Of Ir Nitrosyl Bands Formed On Different Fe-samplesmentioning

confidence: 99%

New precursor for the post-synthesis preparation of Fe-ZSM-5 zeolites with low iron content

et al. 2005

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A new method for preparing ZSM-5 catalysts containing highly dispersed iron species is presented. Iron(III) oxalate was used as the iron precursor in an aerobic aqueous exchange process. The presence of different iron species inside the zeolite pores was investigated by IR spectroscopy of adsorbed NO, which revealed an excellent iron dispersion. The results were compared with those obtained on a Fe-ZSM-5 catalysts prepared by iron(II) chloride sublimation and on samples prepared by controlled migration of framework iron in isomorphously substituted samples.

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“…Over the last three decades, many five-coordinate nitrosyl iron and cobalt porphyrinate compounds have been synthesized and characterized. In the iron(III) porphyrinates, the NO coordinates to the metal center in a linear fashion 7, 8. In iron(II) and cobalt(II) metalloporphyrins, however, NO is coordinated in a bent fashion.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of NO Motion in Solid-State [Co(tetraphenylporphinato)(NO)]

et al. 2010

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The temperature dependence of the crystalline phase of (nitrosyl)(tetraphenylporphinato)-cobalt(II), [Co(TPP)(NO)], has been explored over the temperature range of 100-250 K by X-ray diffraction experiments. The crystalline complex is found in the tetragonal crystal system at higher temperatures and in the triclinic crystal system at lower temperatures. In the tetragonal system, the axial ligand is strongly disordered, with the molecule having crystallographically required 4/m symmetry, leading to eight distinct positions of the single nitrosyl oxygen atom. The phase transition to the triclinic crystal system leads to a partial ordering with the molecule now having inversion symmetry and disorder of the axial nitrosyl ligand over only two positions. At an intermediate temperature near the transition point, a transition structure in which the ordering observed at lower temperatures is only partially complete has been characterized. The increase in ordering allows subtle molecular geometry features to be observed. The transition of the reversible phase change begins at about 195 K. This transition has been confirmed by both X-ray diffraction studies and a differential scanning calorimetry study.

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Preparation and structural characterization of nitrosyl complexes of ferric porphyrinates. Molecular structure of aquonitrosyl(meso-tetraphenylporphinato)iron(III) perchlorate and nitrosyl(octaethylporphinato)iron(III) perchlorate

Cited by 113 publications

References 0 publications

Coordination chemistry of the HNO ligand with hemes and synthetic coordination complexes

Coordination chemistry of the HNO ligand with hemes and synthetic coordination complexes

New precursor for the post-synthesis preparation of Fe-ZSM-5 zeolites with low iron content

Dynamics of NO Motion in Solid-State [Co(tetraphenylporphinato)(NO)]

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