Models of the oxidized forms of polyiron oxo proteins: synthetic routes to (μ-oxo)bis(μ-carboxylato)diiron(III) complexes with neutral monodentate and bidentate capping ligands

Kingsley L. Taft; Axel Masschelein; Shuncheng Liu; Stephen J. Lippard; Diana Garfinkel-Shweky; Avi Bino

doi:10.1016/S0020-1693(00)92407-1

Models of the oxidized forms of polyiron oxo proteins: synthetic routes to (μ-oxo)bis(μ-carboxylato)diiron(III) complexes with neutral monodentate and bidentate capping ligands

Kingsley L. Taft
, Axel Masschelein
, Shuncheng Liu
, Stephen J. Lippard^*
, Diana Garfinkel-Shweky
, Avi Bino

^*Corresponding author for this work

Institute of Chemistry

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

43 Scopus citations

Abstract

Two (μ-oxo)bis(μ-carboxylato)diiron(III) complexes with neutral monodentate and bidentate terminal ligands have been prepared that incorporate features of the diiron oxo centers in the non-heme iron proteins hemerythrin (Hr) and the B2 subunit of ribonucleotide reductase (RRB2) that were not previously modeled. [Fe₂O(OH₂)₂(O₂CCH₂Cl)₂(bpy)₂](NO₃)₂ (1) and [Fe₂O(CH₃OH)₂(O₂CCH₃)₂(BIPhMe)₂](NO₃)₂ (2) were synthesized from the appropriate basic iron carboxylate, ferric nitrate and the bidentate nitrogen ligand bpy or BIPhMe. The molecular structures, as determined by X-ray crystallography, and the electronic spectral, Mössbauer and magnetic properties of 1 and 2 reproduce many of the physical properties of the met forms of Hr and RRB2. A singly-bridged (μ-oxo)diiron(III) complex, [Fe₂O(NO₃)₄(bpy)₂] (3), was also prepared from ferric nitrate and bpy. The chelating bpy and nitrate ligands afford seven-coordinate ferric centers in the centrosymmetric compound. Complex 3 serves as a synthon for the (μ-oxo)bis(μ-carboxylato)diiron(III) core, for the reaction of 3 with excess chloroacetic acid gives 1.

Original language	English
Pages (from-to)	627-631
Number of pages	5
Journal	Inorganica Chimica Acta
Volume	198-200
Issue number	C
DOIs	https://doi.org/10.1016/S0020-1693(00)92407-1
State	Published - 1992

Access to Document

10.1016/S0020-1693(00)92407-1

Cite this

@article{fe6cf37353b14700a290837be8aa3c18,

title = "Models of the oxidized forms of polyiron oxo proteins: synthetic routes to (μ-oxo)bis(μ-carboxylato)diiron(III) complexes with neutral monodentate and bidentate capping ligands",

abstract = "Two (μ-oxo)bis(μ-carboxylato)diiron(III) complexes with neutral monodentate and bidentate terminal ligands have been prepared that incorporate features of the diiron oxo centers in the non-heme iron proteins hemerythrin (Hr) and the B2 subunit of ribonucleotide reductase (RRB2) that were not previously modeled. [Fe2O(OH2)2(O2CCH2Cl)2(bpy)2](NO3)2 (1) and [Fe2O(CH3OH)2(O2CCH3)2(BIPhMe)2](NO3)2 (2) were synthesized from the appropriate basic iron carboxylate, ferric nitrate and the bidentate nitrogen ligand bpy or BIPhMe. The molecular structures, as determined by X-ray crystallography, and the electronic spectral, M{\"o}ssbauer and magnetic properties of 1 and 2 reproduce many of the physical properties of the met forms of Hr and RRB2. A singly-bridged (μ-oxo)diiron(III) complex, [Fe2O(NO3)4(bpy)2] (3), was also prepared from ferric nitrate and bpy. The chelating bpy and nitrate ligands afford seven-coordinate ferric centers in the centrosymmetric compound. Complex 3 serves as a synthon for the (μ-oxo)bis(μ-carboxylato)diiron(III) core, for the reaction of 3 with excess chloroacetic acid gives 1.",

author = "Taft, \{Kingsley L.\} and Axel Masschelein and Shuncheng Liu and Lippard, \{Stephen J.\} and Diana Garfinkel-Shweky and Avi Bino",

year = "1992",

doi = "10.1016/S0020-1693(00)92407-1",

language = "אנגלית",

volume = "198-200",

pages = "627--631",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier B.V.",

number = "C",

}

Models of the oxidized forms of polyiron oxo proteins: synthetic routes to (μ-oxo)bis(μ-carboxylato)diiron(III) complexes with neutral monodentate and bidentate capping ligands. / Taft, Kingsley L.; Masschelein, Axel; Liu, Shuncheng et al.
In: Inorganica Chimica Acta, Vol. 198-200, No. C, 1992, p. 627-631.

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

TY - JOUR

T1 - Models of the oxidized forms of polyiron oxo proteins

T2 - synthetic routes to (μ-oxo)bis(μ-carboxylato)diiron(III) complexes with neutral monodentate and bidentate capping ligands

AU - Taft, Kingsley L.

AU - Masschelein, Axel

AU - Liu, Shuncheng

AU - Lippard, Stephen J.

AU - Garfinkel-Shweky, Diana

AU - Bino, Avi

PY - 1992

Y1 - 1992

N2 - Two (μ-oxo)bis(μ-carboxylato)diiron(III) complexes with neutral monodentate and bidentate terminal ligands have been prepared that incorporate features of the diiron oxo centers in the non-heme iron proteins hemerythrin (Hr) and the B2 subunit of ribonucleotide reductase (RRB2) that were not previously modeled. [Fe2O(OH2)2(O2CCH2Cl)2(bpy)2](NO3)2 (1) and [Fe2O(CH3OH)2(O2CCH3)2(BIPhMe)2](NO3)2 (2) were synthesized from the appropriate basic iron carboxylate, ferric nitrate and the bidentate nitrogen ligand bpy or BIPhMe. The molecular structures, as determined by X-ray crystallography, and the electronic spectral, Mössbauer and magnetic properties of 1 and 2 reproduce many of the physical properties of the met forms of Hr and RRB2. A singly-bridged (μ-oxo)diiron(III) complex, [Fe2O(NO3)4(bpy)2] (3), was also prepared from ferric nitrate and bpy. The chelating bpy and nitrate ligands afford seven-coordinate ferric centers in the centrosymmetric compound. Complex 3 serves as a synthon for the (μ-oxo)bis(μ-carboxylato)diiron(III) core, for the reaction of 3 with excess chloroacetic acid gives 1.

AB - Two (μ-oxo)bis(μ-carboxylato)diiron(III) complexes with neutral monodentate and bidentate terminal ligands have been prepared that incorporate features of the diiron oxo centers in the non-heme iron proteins hemerythrin (Hr) and the B2 subunit of ribonucleotide reductase (RRB2) that were not previously modeled. [Fe2O(OH2)2(O2CCH2Cl)2(bpy)2](NO3)2 (1) and [Fe2O(CH3OH)2(O2CCH3)2(BIPhMe)2](NO3)2 (2) were synthesized from the appropriate basic iron carboxylate, ferric nitrate and the bidentate nitrogen ligand bpy or BIPhMe. The molecular structures, as determined by X-ray crystallography, and the electronic spectral, Mössbauer and magnetic properties of 1 and 2 reproduce many of the physical properties of the met forms of Hr and RRB2. A singly-bridged (μ-oxo)diiron(III) complex, [Fe2O(NO3)4(bpy)2] (3), was also prepared from ferric nitrate and bpy. The chelating bpy and nitrate ligands afford seven-coordinate ferric centers in the centrosymmetric compound. Complex 3 serves as a synthon for the (μ-oxo)bis(μ-carboxylato)diiron(III) core, for the reaction of 3 with excess chloroacetic acid gives 1.

UR - https://www.scopus.com/pages/publications/0000997286

U2 - 10.1016/S0020-1693(00)92407-1

DO - 10.1016/S0020-1693(00)92407-1

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:0000997286

SN - 0020-1693

VL - 198-200

SP - 627

EP - 631

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

IS - C

ER -

Models of the oxidized forms of polyiron oxo proteins: synthetic routes to (μ-oxo)bis(μ-carboxylato)diiron(III) complexes with neutral monodentate and bidentate capping ligands

Abstract

Access to Document

Other files and links

Fingerprint

Cite this