Title :

The guanidinium <i>t</i> -diaqua-bis(oxalato)chromate(III) dihydrate complex: synthesis, crystal structure, EPR spectroscopy and magnetic properties

Author(s) :

Kamga, Idelle Nono [Auteur]
Nana, Augustin Nkwento [Auteur]
Ndosiri, Bridget Ndoye [Auteur]
Capet, Frederic [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Foulon, Michel [Auteur]
Nenwa, Justin [Auteur]

Journal title :

Zeitschrift für Naturforschung B

Abbreviated title :

Zeitschrift für Naturforschung B

Volume number :

76

Pages :

211-216

Publication date :

2021-04-27

ISSN :

1865-7117, 0932-0776

HAL domain(s) :

Chimie

English abstract : [en]

Abstract A new salt (CH 6 N 3 )[ t -Cr(C 2 O 4 ) ...
Show more >Abstract A new salt (CH 6 N 3 )[ t -Cr(C 2 O 4 ) 2 (H 2 O) 2 ]·2H 2 O ( 1 ) (CH 6 N 3 +  = guanidinium cation) has been synthesized and characterized by single-crystal X-ray diffraction, FT-IR and UV–Vis spectroscopies, elemental and thermogravimetric analyses. In the crystal structure of 1 , the chromate(III) ion lies on an inversion center in the form of an elongated octahedron. The coordination sphere consists of four oxygen atoms of two chelating oxalato ligands in the equatorial plane and two axial oxygen atoms of water ligands. The structural feature of focal interest in the structure of 1 is the formation of pillars of [Cr(C 2 O 4 ) 2 (H 2 O) 2 ] − complex anions and CH 6 N 3 + guanidinium cations, with the next-neighbor cations rotated by an angle of 60° relative to each other. O–H···O and N–H···O hydrogen bonds play an important role in the construction of the three-dimensional network. The electron paramagnetic resonance (EPR) and magnetic properties of 1 have also been investigated.Show less >

Language :

Anglais

Audience :

Non spécifiée

Popular science :

Non

Administrative institution(s) :

CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Submission date :

2022-03-24T09:03:05Z