A new terephthalato-bridged binuclear manganese(II) complex [Mn2(dmptacn)2( p -bdc)](ClO4)2: synthesis, structure and properties

A binuclear manganese complex, [Mn2(dmptacn)2(p-bdc)] (ClO4)2 [dmptacn = 1,4-bis(2-pyridylmethyl)-1,4,7-triazacyclononane, p-bdc = terephthalate] has been synthesized and characterized. The complex crystallizes in triclinic space group , with a = 9.0325(7), b = 11.2851(8), c = 11.9907(9) A; α = 90.7900(10), β = 101.3700(10), γ = 103.5040(10)°. IR, UV--Vis, element analysis, interaction with DNA and magnetic property of the complex has been studied. The magnetic susceptibility measured over the range 2–300 K showsthat there is a very weak antiferromagnetic interaction with J = −0.035 cm−1, g = 1.98.