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Using (bis)diethoxyphosphoryl ferrocene [Fc(O＝P(OEt)2)2] and transition metal carboxylates – [M2(μ-OOCR)4(CH3CN)2], M = CuII, R = tBu, (C5H4)Mn(CO)3 (Cym) or [M3(μ-OOCR)6(CH3CN)2], M = NiII, CoII, R = Cym, a series of heterometallic polymers with metal cores {Cu2Fe}n (1), {Cu2Mn4Fe}n (2) {Ni2Mn4Fe}n (3), and {Co2Mn4Fe}n (4) were obtained under mild conditions. Compounds 1 and 2 showed antibacterial activity against a Mycobacterium smegmatis strain in vitro. [ABSTRACT FROM AUTHOR]

[Display omitted] • The effect of the solvent on the composition of cobalt and nickel complexes with furan- and thiophenecarboxylic acid anions and 3,5-dimethylpyrazole has been shown. • Antibacterial, magnetic and catalytic properties of the obtained complexes have been studied. Series of complexes of the composition [M(L) 2 (Hdmpz) n ] (L = fur, M = CoII, n = 2 (1), n = 4 (2), M = NiII, n = 2 (3), L = tph, M = CoII, n = 2 (4), M = NiII, n = 2 (5), n = 4 (6)) has been obtained by interaction of cobaltII and nickelII acetates with 3-furancarboxylic (Hfur) or 2-thiophencarboxylic (Htph) acids, followed by the addition of 3,5-dimethylpyrazole (Hdmpz). According to the X-ray data in complex 1 – 6 , metal atoms are surrounded by carboxylate anions and two or four monodentately coordinated Hdmpz molecules. Additional stabilization of the complexes is carried out by the inter- and intramolecular hydrogen bonds. Co and Ni catalysts obtained by chemical activation of 1 and 3 exhibit high catalytic activity in a continuous dicyclopentadiene (DCPD) hydrogenation process at atmospheric hydrogen pressure. Slow relaxation of magnetization has been found for complexes by use of ac-magnetometry for compounds 1 and 4 at 1000 Oe dc-field in contrast with 2, 3, 5, 6 exhibiting no slow magnetic relaxation. Biological activity of 1 – 6 has been determined against a non-pathogenic strain of Mycobacterium smegmatis. [ABSTRACT FROM AUTHOR]