title: Synthesis and Characterization of a Linear [Mn(3)(O(2)CMe)(4)(py)(8)] Complex.
abstract: Two new compounds that consist of the linear trinuclear manganese(II) cation [Mn(3)(O(2)CMe)(4)(py)(8)](2+) cocrystallizing with different counteranions (I(3) (-), [1]; ClO(4) (-), [2]) are reported. Complex 1 was prepared from the reaction of [Mn(O(2)CMe)(2)] . 4H(2)O with I(2) in MeCO(2)H/py, whereas complex 2 was isolated from the reaction of [Mn(3)O(O(2)CMe)(6)(py)(3)] . py with [Mn(ClO(4))(2)] . 6H(2)O in MeCN/py. The crystal structures of both compounds were determined by single crystal X-ray crystallography. Magnetic susceptibility studies that were performed in microcrystalline powder of 1 in the 2-300 K range revealed the presence of antiferromagnetic exchange interactions that resulted in an S = 5/2 ground spin state.
authors.affiliation: Department of Chemistry, University of Cyprus, 1678 Nicosia, Cyprus.
authors.forename: Eleni E
authors.initials: EE
authors.lastname: Moushi
authors.forename: Christos
authors.initials: C
authors.lastname: Kizas
authors.forename: Vassilios
authors.initials: V
authors.lastname: Nastopoulos
authors.forename: Anastasios J
authors.initials: AJ
authors.lastname: Tasiopoulos