Wydział Chemii

Rahman Bikas

Ramin Karimian

Miłosz Siczek

Serhiy Demeshko

Hassan Hosseini-Monfared

Tadeusz Lis

2016

Inorganic Chemistry Communications

70

219-222

10.1016/j.inoche.2016.06.014

Naukowa

Angielski

Artykuł

A new 2D coordination polymer of Mn(II), {[Mn₂(L)(μ-dca)₃]·CH₃OH}_n (1), has been synthesized and characterized by elemental, TGA and single-crystal X-ray diffraction analyses and spectroscopic methods where HL is bis-[(E)-N′-(phenyl(pyridin-2-yl)methylene)]carbohydrazide. Single crystals X-ray analysis reveals that 1 has dinuclear enolate bridged Mn(II) cores which are connected together by three μ_1,5-dicyanamide (μ-dca) bridging ligands and a 2D coordination polymer is formed by these connections. FT-IR spectroscopy and X-ray analysis indicate that the carbohydrazone ligand is coordinated to the metal cores as a mononegative ligand in the enol form. The FT-IR spectrum of 1 depicts three characteristic bands of dicyanamide anion at 2179, 2239 and 2304 cm^− 1. The magnetic susceptibility measurement of 1 between 2 and 295 K indicates the antiferromagnetic coupling mediated via enolate oxygen within the dinuclear cores, whereas the dicyanamide ligand connecting these dinuclear units does not provide any appreciably contribution to magnetic properties.

Mn(II) coordination polymer, magnetic studies, crystal structure, Dicyanamide, TGA analysis

http://dx.doi.org/10.1016/j.inoche.2016.06.014

http://www.elsevier.com