Dinuclear cobalt(II) complexes of pyrazole ligands with chelating side arms
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Autoren
- F Meyer
- S Beyreuther
- K Heinze
- L Zsolnai
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:A1997WX74800009&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1002/cber.19971300511
- Externe Identifier
- Clarivate Analytics Document Solution ID: WX748
- ISSN
- 0009-2940
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- CHEMISCHE BERICHTE-RECUEIL
- Schlüsselwörter
- pyrazolate complexes
- dinuclear complexes
- bridging ligands
- cobalt
- conformational analysis
- Paginierung
- 605 - 613
- Datum der Veröffentlichung
- 1997
- Status
- Published
- Titel
- Dinuclear cobalt(II) complexes of pyrazole ligands with chelating side arms
- Sub types
- Article
- Ausgabe der Zeitschrift
- 130
Datenquelle: Web of Science (Lite)
- Andere Metadatenquellen:
-
- Abstract
- <jats:title>Abstract</jats:title><jats:p>A series of pyrazole‐based potential ligands bearing polydentate amine substituents in the 3‐ and 5‐positions of the heterocycle has been synthesized [3,5‐bis(R<jats:sub>2</jats:sub>NCH<jats:sub>2</jats:sub>)‐pyzH R<jats:sub>2</jats:sub>N = Me<jats:sub>2</jats:sub>N(CH<jats:sub>2</jats:sub>)<jats:sub>3</jats:sub>NMe (<jats:bold>2aH</jats:bold>), [Me<jats:sub>2</jats:sub>N(CH<jats:sub>2</jats:sub>)<jats:sub>3</jats:sub>]<jats:sub>2</jats:sub>N (<jats:bold>2bH</jats:bold>), (Et<jats:sub>2</jats:sub>NCH<jats:sub>2</jats:sub>CH<jats:sub>2</jats:sub>)<jats:sub>2</jats:sub>N (<jats:bold>2cH</jats:bold>)]. Upon reaction with two equivalents of CoCl<jats:sub>2</jats:sub> they form complexes LCo<jats:sub>2</jats:sub>Cl<jats:sub>3</jats:sub> (<jats:bold>3a</jats:bold>–<jats:bold>c</jats:bold>; L = <jats:bold>2a</jats:bold>–<jats:bold>c</jats:bold>, respectively) which are shown crystallographically to contain a dinuclear metal core bridged by both the pyrazolate unit and a chlorine atom, with each cobalt center carrying a further terminal chlorine atom. Two of the ligand side arms in <jats:bold>3b</jats:bold>, <jats:bold>c</jats:bold> are dangling, thus leading to five‐coordination of the cobalt(II) centers in all cases. Addition of two equivalents of NaBPh<jats:sub>4</jats:sub> to solutions of <jats:bold>3b</jats:bold>, <jats:bold>c</jats:bold> induced coordination of the formerly dangling side arms to the metal centers by substitution of the terminal chlorine atoms. The resulting compounds [LCo<jats:sub>2</jats:sub>Cl](BPh<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub> (<jats:bold>4b</jats:bold>, <jats:bold>c</jats:bold>, respectively) were characterized by X‐ray structure analyses. They can be viewed as dinuclear linked versions of tran‐type complexes [(tran = tris(aminoalkyl)amine] with distorted trigonal‐bipyramidal coordination spheres around cobalt(II). Conformational analyses employing force‐field calculations were carried out for <jats:bold>4b</jats:bold>, <jats:bold>c</jats:bold> in order to rationalize the conformations observed in the solid state with regard to the accessible conformational space.</jats:p>
- Autoren
- Franc Meyer
- Stefan Beyreuther
- Katja Heinze
- Laszlo Zsolnai
- DOI
- 10.1002/cber.19971300511
- ISSN
- 0009-2940
- Ausgabe der Veröffentlichung
- 5
- Zeitschrift
- Chemische Berichte
- Sprache
- en
- Online publication date
- 2006
- Paginierung
- 605 - 613
- Datum der Veröffentlichung
- 1997
- Status
- Published
- Herausgeber
- Wiley
- Herausgeber URL
- http://dx.doi.org/10.1002/cber.19971300511
- Datum der Datenerfassung
- 2023
- Titel
- Dinuclear Cobalt(II) Complexes of Pyrazole Ligands with Chelating Side Arms
- Ausgabe der Zeitschrift
- 130
Datenquelle: Crossref
- Beziehungen:
-