A Distinct Tetradentate N2O2‐type Ligand: (o‐Carboranyl)bis(2‐hydroxymethyl)pyridine1. Issue 7 (9th April 2013)

• Record Type: Journal Article
• Authors: Di Salvo, Florencia; Teixidor, Francesc; Viñas, Clara; Giner Planas, José
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 639:Issue 7(2013)
• Page Start: 1194
• Page End: 1198
• Publication Date: 2013-04-09
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201300116
• Languages: English
• ISSNs: 0044-2313

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A new chiral racemic ligand (<italic>o</italic>‐carboranyl)bis(2‐hydroxymethyl)pyridine<bold> oCB(hmpH)₂</bold>, that is composed of a central <italic>o</italic>‐carborane unit where two arms radiate out of the cluster carbons each one containing a 2‐pyridylmethylalcohol chelating arms, provides two potentially bidentate {NO} or one tetradentate {N₂O₂} binding pockets. An unprecedented octahedral Co^II complex [CoCl₂(<italic>anti</italic>‐<bold>oCB</bold>(hmpH)₂] was obtained under aerobic conditions and characterized by X‐ray crystallography as well as IR and NMR spectroscopy. <italic>anti</italic>‐<bold>oCB</bold>(hmpH)₂ acts as a tetradentate N₂O₂‐ligand affording the complex as a racemic mixture of <italic>cis‐</italic>α Δ‐[CoCl₂(<italic>^RRanti</italic>‐<bold>oCB</bold>(hmpH)₂)] and Λ‐[CoCl₂(<italic>^SSanti</italic>‐<bold>oCB</bold>(hmpH)₂)]. The new ligand oCB(hmpH)₂ appears to be suitable for producing a variety of new chiral‐at‐metal complexes.</p> </abstract>