Synthesis, Crystal Structure, Thermal Analysis, Spectroscopic, and Magnetic properties of a Novel Organic Cation Tetrachlorocobaltate(II)

• Published in: Journal of superconductivity and novel magnetism 2016-06, Vol.29 (6), p.1573-1581
• Main Authors: Maha, Mathlouthi, Janzen, Daron E., Mohamed, Rzaigui, Wajda, Smirani
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Condensed Matter Physics; Magnetic Materials; Magnetism; Original Paper; Physics; Physics and Astronomy; Strongly Correlated Systems; Superconductivity
• ISSN: 1557-1939; 1557-1947
• DOI: 10.1007/s10948-016-3451-0

The preparation and structural characterization of a new complex (C 11 H 18 N 2 O) 2 [CoCl 4 ] 2 .H 2 O (I) are described. The crystal structure determination shows that the title compound crystallizes in the Pccn space group of the orthorhombic system. The unit cell dimensions are as follows: a = 29.090 Å, b = 9.774 Å, and c = 11.751 Å, with Z = 4. The crystal structure of this salt was solved by Patterson methods and refined by full-matrix least squares on F 2 to final values of R = 0.0333 and wR = 0.0771. The tetrahedral (CoCl 4 ) 2− anions are connected to the 1-(2-methoxyphenyl)piperazinium cations by hydrogen bonding (N–H ⋯Cl and O–H ⋯Cl). The crystals were characterized by employing several techniques such as single-crystal X-ray diffraction, thermo differential and gravimetric analyses, IR, RMN and UV-vis spectra, and fluorescence properties. Moreover, magnetic susceptibility measurements indicate that the compound exhibits weak antiferromagnetic coupling interaction.