Literature DB >> 18998629

A mixed-valence octanuclear iron-oxo pyrazolate: assessment of electronic delocalization by structural and spectroscopic analysis.

Indranil Chakraborty1, Peter Baran, Yiannis Sanakis, Athanassios Simopoulos, Esteban Fachini, Raphael G Raptis.   

Abstract

A formally Fe(III)(7)Fe(II) complex, containing an inner Fe(4)O(4)-cubane and four peripheral Fe centers, is derived from the one-electron reduction of its Fe(III)(8) precursor. Spectroscopic analysis of the former reveals that the redox activity of this Fe(8) system is confined within its cubane core. The resulting (Fe(4)O(4))(3+)-cubane, which is valence-delocalized in the NMR, Mössbauer, and IR spectroscopy time scales but valence-trapped in the X-ray photoelectron spectroscopy (XPS) time scale, is better described as a Robin-Day class-II system by the analysis of its near-infrared (NIR) intervalence charge transfer (IVCT) band profile.

Entities:  

Mesh：

Substances：

Year:  2008        PMID： 18998629      PMCID： PMC4617381          DOI： 10.1021/ic801459s

Source DB:  PubMed          Journal:  Inorg Chem        ISSN： 0020-1669            Impact factor:   5.165


  9 in total

1.  The localized-to-delocalized transition in mixed-valence chemistry.

Authors:  K D Demadis; C M Hartshorn; T J Meyer
Journal:  Chem Rev       Date:  2001-09       Impact factor: 60.622

2.  Optical transitions of symmetrical mixed-valence systems in the Class II-III transition regime.

Authors:  Bruce S Brunschwig; Carol Creutz; Norman Sutin
Journal:  Chem Soc Rev       Date:  2002-05       Impact factor: 54.564

Review 3.  Synthetic analogues of the active sites of iron-sulfur proteins.

Authors:  P Venkateswara Rao; R H Holm
Journal:  Chem Rev       Date:  2004-02       Impact factor: 60.622

4.  Intervalence charge transfer (IVCT) in trinuclear and tetranuclear complexes of iron, ruthenium, and osmium.

Authors:  Deanna M D'Alessandro; F Richard Keene
Journal:  Chem Rev       Date:  2006-06       Impact factor: 60.622

5.  Mixed valence: origins and developments.

Authors:  Peter Day; Noel S Hush; Robin J H Clark
Journal:  Philos Trans A Math Phys Eng Sci       Date:  2008-01-13       Impact factor: 4.226

6.  A cube in a tetrahedron: microwave-assisted synthesis of an octametallic Fe(III) cluster.

Authors:  Ian A Gass; Constantinos J Milios; A Gavin Whittaker; Francesca P A Fabiani; Simon Parsons; Mark Murrie; Spyros P Perlepes; Euan K Brechin
Journal:  Inorg Chem       Date:  2006-07-10       Impact factor: 5.165

7.  Hydroxo-bridged Cubane-type tetrairon(II) clusters supported by sterically-hindered carboxylate ligands.

Authors:  D Lee; L Sorace; A Caneschi; S J Lippard
Journal:  Inorg Chem       Date:  2001-12-17       Impact factor: 5.165

8.  A new structural motif for biological iron: iron K-edge XAS reveals a [Fe4-mu-(OR)5(OR)(9-10)] cluster in the ascidian Perophora annectens.

Authors:  Patrick Frank; Anthony DeTomaso; Britt Hedman; Keith O Hodgson
Journal:  Inorg Chem       Date:  2006-05-15       Impact factor: 5.165

9.  Synthesis, characterization, and study of octanuclear iron-oxo clusters containing a redox-active Fe4O4-cubane core.

Authors:  Peter Baran; Roman Boca; Indranil Chakraborty; John Giapintzakis; Radovan Herchel; Qing Huang; John E McGrady; Raphael G Raptis; Yiannis O Sanakis; Athanasios Simopouloso
Journal:  Inorg Chem       Date:  2007-12-14       Impact factor: 5.165
  9 in total
  2 in total

1.  Synthesis of well-defined bicapped octahedral iron clusters [((tren) L)2 Fe8 (PMe2 Ph)2 ](n) (n=0, -1).

Authors:  Raúl Hernández Sánchez; Alexander M Willis; Shao-Liang Zheng; Theodore A Betley
Journal:  Angew Chem Int Ed Engl       Date:  2015-08-19       Impact factor: 15.336

2.  Water-Soluble Derivatives of Octanuclear Iron-Oxo-Pyrazolato Complexes; An Experimental and Computational Study.

Authors:  Soma Das; Indranil Chakraborty; Dmitry Skachkov; Majid Ahmadi; Yasuyuki Ishikawa; Peter Baran; Raphael G Raptis
Journal:  Eur J Inorg Chem       Date:  2012-08-01       Impact factor: 2.524
  2 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.