rac-{[2-(Diphenyl­thio­phosphor­yl)ferrocen­yl]meth­yl}dimethyl­ammonium diphenyl­dithio­phosphinate

2-(Diphenyl­thio­phosphino)dimethyl­amino­methyl­ferrocene is a key inter­mediate in the synthesis of various ferrocenyl ligands. During one such synthesis, the title compound, [Fe(C5H5)(C20H22NPS)](C12H10PS2), was isolated as a by-product. It is built up by association of (2-(diphenyl­phosphino)ferrocen­yl)meth­yl)dimethyl­ammonium cations and diphenyl­phosphino dithio­ate anions. N—H⋯S, C—H⋯S and C—H⋯π inter­actions link the anions and cations. Each anion–cation pair is linked two by two through C—H⋯π inter­actions, forming pseudo dimers

Bis(creatininium) tetra­chlorido­cadmate(II)

In the title compound, (C4H8N3O)2[CdCl4], the asymmetric unit comprises two creatininium cations and one tetra­chloridocadmate anion. Cd⋯O secondary bonding links one of the two imidazole rings and the anion into ion pairs. The free and bound cations form layers between which the [CdCl4]2− anions are sandwiched. The CdII atom adopts a distorted trigonal-bipyramidal geometry in which the Cd⋯O bond is axial. Inter­molecular N—H⋯Cl hydrogen bonds form a two-dimensional network parallel to (001) which ensures the junction between creatininium cations and [CdCl4]2− anions

Potential of Halophilic Penicillium chrysogenum Isolated from Algerian Saline Soil to Produce Laccase on Olive Oil Wastes

Enzymes from halophilic fungi offer interesting biotechnological applications, which lead us to explore novel producing strains. 23 fungi were isolated from Algerian saline soil. Among the three strains presenting laccase activities, one exhibited the high decolourising capacity of olive mill wastewaters. Identification showed that the efficient isolate GS15 belongs to Penicillium chrysogenum. This strain achieves optimal growth at 15% NaCl, 25 °C, pH 5, dark, aerobic and static conditions. The selected fungus is capable of producing extracellular enzymes as follows: caseinase, tannase, esterase and lipase. The laccase activities produced by P. chrysogenum on raw olive wastes are being reported here for the first time. GS15 produced 183.0 and 203.0 U/L of laccase activities in 10% and 20% unsupplemented olive mill wastewaters, respectively. The significant enzymatic activities can be correlated to the high ability of GS15 to decolourise industrial wastewater from the olive oil extraction. In these conditions no pre-treatment of olive wastewaters was needed. On the untreated grinded and non-grinded olive pomace, the laccase activity was 5.78 U/g and 5.36 U/g, respectively. Because the halophilic fungus has basic requirement for growth, this fungal strain is promising for saline biotechnological applications.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Cobalt(II), Nickel(II) and Zinc(II) complexes based on DHA: Synthesis, X-ray crystal structure, antibacterial activity and DFT computational studies

International audienceIn the present work, a combined experimental and computational study of three new DHA chelates namely [Co(DHA)2.2DMSO] (1), [Ni(DHA)2.2DMF] (2) and [Zn (DHA)2.2DMF] (3), (DHA = 3-Acetyl-4-hydroxy-6-methyl-2-oxo-2H-pyran) is reported. Synthesized compounds are characterized by FT-IR which indicates the metal coordination via both oxygen atom, while single-crystal X-ray crystallography confirms the chelates structure as mononuclear complexes having a distorted octahedral coordination geometry of type MO6 with intermolecular C–H⋯O bonds. Structures and electronic properties investigated in the framework of the density functional theory (DFT) are in good agreement with experimental results. Besides, a comparative evaluation of in vitro antibacterial potential of DHA and derivatives exhibits better results for DHA free ligand, even close to the effect of antibiotics used as references, highlighting the role of hydroxyl function in case of this application