An unusual vanadium(II) promoted hydrogenation of a magnesium tetraiminediphenolate compound yielding an asymmetric oxovanadium(IV) macrocyclic complex

Bis(μ-4-fluoro-2,6-diformylphenolato)bis[diaquanickel(II)] dichloride

In the title dinuclear nickel(II) complex, [Ni₂(C₈H₄FO₃)₂(H₂O)₄]Cl₂, synthesized by the reaction between 4-fluoro-2,6-diformyl­phenol and nickel(II) chloride in methanol, the coordination cation is located on an inversion center and the Ni^II atom adopts a slightly distorted octa­hedral coordination geometry. The two Ni atoms are bridged by two phenolate O atoms and the intra­molecular Ni⋯Ni distance is 3.0751 (9) Å. The crystal structure is stabilized by O—H⋯Cl hydrogen bonds.

Mössbauer analysis of substituted diiron(II) tetraiminediphenolate macrocyclic complexes

A new series of substituted diiron(II) complexes [Fe(2)(tidf)(L)(2)(MeOH)(2)](n+) (tidf=a two compartment tetraiminediphenolate macrocycle; n=0 or 2+; L=NCS(-), CN(-), N(3)(-), pyrazine (pz), 4-cyanopyridine (4-cnpy) and 4-mercaptopyridine (4-shpy)) and one tetranuclear complex, {[Fe(2)(tidf)(CH(3)OH)(2)](2)(mu-4-cnpy)(2)}(ClO(4))(4) were isolated and characterized by elemental analysis, conductivity measurements, Mössbauer and FTIR.