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| Title: | Acid-base self-assembly chemistry and hydrogen bonding interactions resulting in the formation of a tetranuclear aggregate containing four crystallographically non-equivalent FeIII centers |
| Author (s): | Tanase, Stefania Bouwman, Elisabeth Long, Gary John Shahin, Ahmed M. Mills, Allison M. Spek, Anthony L. Reedijk, Jan |
| Department/Lab Affiliations: | Chemistry |
| Keywords: | hydroxo bridge mössbauer pyrazole ligands |
| Subject Terms: | Iron. |
| Issue Date: | 2004 |
| Publisher: | John Wiley & Sons |
| Citation: | Tanase, Stefania, Elisabeth Bouwman, Gary J. Long, Ahmed M. Shahin, Allison M. Mills, Anthony L. Spek, and Jan Reedijk, “Acid-Base Self-Assembly Chemistry and Hydrogen Bonding Interactions Resulting in the Formation of a Tetranuclear Aggregate Containing Four Crystallographically Non-Equivalent FeIII Centers,” Eur. J. Inorg. Chem 2004, 4572-4578. |
| Abstract: | The synthesis and characterization of a mononuclear iron(III) complex [Fe(Hphpz)Cl(CH3OH)] (1) and a tetranuclear assembly of a bis(-hydroxo)-bridged dinuclear iron(III) complex [{Fe(Hphpz)2(OH)}2][Fe(Hphpz)3]2 (2) with the ligand 3(5)-methyl-5(3)-(2-hydroxyphenyl)pyrazole (H2phpz) is reported. Compound 1 is converted into 2 in a methanol solution and in the presence of a base. The asymmetric unit of 2 consists of two independent [Fe(Hphpz)3] molecules and one dinuclear complex [Fe(Hphpz)2(OH)]2 containing two crystallographically non-equivalent iron(III) ions; the three units are linked by N-H···O and O-H···O hydrogen bonding and stacking interactions to form a cluster with an approximate C2-symmetry. The Mössbauer spectra of [{Fe(Hphpz)2(OH)}2][Fe(phpz)3]2 have been measured at 295 and 78 K and indicate the presence of four crystallographically distinct, but chemically similar iron(III) sites. The magnetic properties of this compound originate from the weak antiferromagnetic interaction between the FeIII ions of the [Fe(phpz)2(OH)]2 dimer (J = -2.8 cm-1). (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004) |
| Type: | Article - Journal text |
| In Title: | European Journal of Inorganic Chemistry |
| Copyright Notice: | Pre-print: author can archive; Post-print: author can archive; This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. FULL COPYRIGHT INFORMATION: |
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| title | Acid-base self-assembly chemistry and hydrogen bonding interactions resulting in the formation of a tetranuclear aggregate containing four crystallographically non-equivalent FeIII centers |
| contributor.author | Tanase, Stefania |
| contributor.author | Bouwman, Elisabeth |
| contributor.author | Long, Gary John |
| contributor.author | Shahin, Ahmed M. |
| contributor.author | Mills, Allison M. |
| contributor.author | Spek, Anthony L. |
| contributor.author | Reedijk, Jan |
| contributor.deptlab | Chemistry |
| contributor.sponsor | Dutch economy, ecology, and technology program |
| subject | hydroxo bridge |
| subject | mössbauer |
| subject | pyrazole ligands |
| subject.LCSH | Iron. |
| date.issued | 2004 |
| publisher | John Wiley & Sons |
| identifier.citation | Tanase, Stefania, Elisabeth Bouwman, Gary J. Long, Ahmed M. Shahin, Allison M. Mills, Anthony L. Spek, and Jan Reedijk, “Acid-Base Self-Assembly Chemistry and Hydrogen Bonding Interactions Resulting in the Formation of a Tetranuclear Aggregate Containing Four Crystallographically Non-Equivalent FeIII Centers,” Eur. J. Inorg. Chem 2004, 4572-4578. |
| identifier.pub.URI | |
| description.abstract | The synthesis and characterization of a mononuclear iron(III) complex [Fe(Hphpz)Cl(CH3OH)] (1) and a tetranuclear assembly of a bis(-hydroxo)-bridged dinuclear iron(III) complex [{Fe(Hphpz)2(OH)}2][Fe(Hphpz)3]2 (2) with the ligand 3(5)-methyl-5(3)-(2-hydroxyphenyl)pyrazole (H2phpz) is reported. Compound 1 is converted into 2 in a methanol solution and in the presence of a base. The asymmetric unit of 2 consists of two independent [Fe(Hphpz)3] molecules and one dinuclear complex [Fe(Hphpz)2(OH)]2 containing two crystallographically non-equivalent iron(III) ions; the three units are linked by N-H···O and O-H···O hydrogen bonding and stacking interactions to form a cluster with an approximate C2-symmetry. The Mössbauer spectra of [{Fe(Hphpz)2(OH)}2][Fe(phpz)3]2 have been measured at 295 and 78 K and indicate the presence of four crystallographically distinct, but chemically similar iron(III) sites. The magnetic properties of this compound originate from the weak antiferromagnetic interaction between the FeIII ions of the [Fe(phpz)2(OH)]2 dimer (J = -2.8 cm-1). (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004) |
| type | Article - Journal |
| type.DCMIType | text |
| type.status | Postprint |
| rights | Pre-print: author can archive; Post-print: author can archive; |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights.URI | |
| rights.URI | |
| relation.isPartOf | European Journal of Inorganic Chemistry |
| date.available | 2008-06-26T21:16:18Z |
| identifier.persist.URI |