Low temperature heat capacity, thermodynamic and magnetic property of several new dinuclear complexes

We report the design, synthesis, structure and property of four complexes formulated as {[M-2(4-C(3)trz)3(H2O)6]. (H2BTTC)(2)}n. Single-crystal X-ray diffraction reveals that the space group of these complexes is orthorhombic, Pnma. The magnetic property characterization reveals that antiferromagnetic interactions dominate in complexes 1, 2 and 3. Correspondingly, complexes 1, 2 and 3 exhibit Schottky anomalies at low temperature, according to the heat capacity measurement (1.9 ~ 300 K) of these four complexes. Furthermore, the thermodynamic functions and the responses of heat capacity to the magnetic field have been determined. These results may provide the important thermodynamic basis for understanding the magnetic and structural properties of these molecular-based magnetic materials.

Automated summary

This study reports the design, synthesis, structure, and property of four complexes. The magnetic property characterization reveals the presence of antiferromagnetic interactions in three of the complexes, which exhibit Schottky anomalies at low temperature. The thermodynamic functions and the responses of heat capacity to the magnetic field have been determined.