Synthesis and Crystal Structure of [Co(DmgH)2(Thio)2]2F[PF6]. The Effect of Fluorine-Containing Co(III) Dioximates on the Physiological Processes of the Microalga Porphyridium cruentum

Abstract

New fluorine-containing cobalt(III) dioximates [Co(DmgH)2(Thio)2]2F[PF6] (I) and [Co(DmgH)2(Sam)2]2[TiF6] · 4H2O (II) (DmgH = dimethylglyoxime monoanion, Thio = thiourea, Sam = sulfanilamide) were obtained. The structure of I was determined by X-ray diffraction (CIF file CCDC no. 1852216). The crystals are cubic, space group Pn $$\bar {3}$$ n. The octahedral coordination polyhedron of the metal is formed by the N4S2 set of donor atoms of two DmgH¯ ligands and two Thio molecules. The effect of compounds I and II and two previously described compounds of this class with fluorine anions, [Co(DmgH)2(Thio)2]2[TiF6] · 2H2O (III) and [Co(DmgH)2(An)2]2[ZrF6] (IV) (An = aniline), on the physiological processes of the red microalga Porphyridium cruentum was studied. Complex III in concentration of 20 mg/L increased the microalga productivity by 20% and lipid biosynthesis by 17% and can be proposed for biotechnology applications.