A cyanido-bridged two-dimensional network based on a Ru-II schiff base complex and Mn-II ions: Synthesis, crystal structure and magnetic properties

作者：Pichon Celine; Dechambenoit Pierre; Clerac Rodolphe^*

来源：Polyhedron, 2013, 52: 476-481.

DOI：10.1016/j.poly.2012.08.048

• Cyanidometalates
• Polynuclear complexes
• 2D Networks
• Magnetic properties
• Mean-field approximation

The reaction between (Bu4N)[Ru(salen)(CN)(2)] and MnCl2 yielded a bidimensional (2D) network [{Ru(salen)(CN)(2)}(2)Mn(CH3CN)]center dot H2O (1) incorporating square pyramidal Mn-II centers. The single crystal X-ray structure, heat capacity and magnetic properties of 1 are herein reported. From the magnetic measurements, antiferromagnetic interactions were detected between Ru-III (s = 1/2) and Mn-II (S = 5/2) ions through the cyanido bridges (J) in the 2D framework as well as antiferromagnetic interplane interactions (J'). These interactions were estimated using a three-dimensional model in the frame of the mean field approximation (J/K-B = -0.86(2) K and J'/k(B) = -0.067(6) K, g(Ru) = 2.33(5)). Furthermore, a three dimensional antiferromagnetic order was evidenced by dc susceptibility measurements with a Neel temperature of 2.6 +/- 0.1 K that was also confirmed by heat capacity measurements.

• 出版日期2013-3-22