Synthesis and characterization of vanadyl(IV) complexes of Schiff bases derived from anthranilic acid and salicylaldehyde (or its derivatives) or acetylacetone. Single crystal X-ray structures of the oxidized products

The first thermochromic vanadium(IV) alkoxide system

“…These temperatures were selected in order to largely favour the blue or the yellow species, respectively. The spectrum at 203 K is characterised by better resolution, with additional and shifted medium-to-high intensity bands when compared to the one recorded at 298 K. The data suggest that the blue solution contains a lower nuclearity, higher symmetry species (V(OPr i ) 4 ) than the yellow one (V 2 (OPr i ) 8 ), and this finds support in the 780-830 cm À1 absorptions assignable to m as (V-O-V) in the yellow solution, which have also been reported for a number of binuclear and polymeric vanadium oxoalkoxides (Table 1) [16][17][18][19][20][21].…”

The first thermochromic vanadium(IV) alkoxide system

“…These temperatures were selected in order to largely favour the blue or the yellow species, respectively. The spectrum at 203 K is characterised by better resolution, with additional and shifted medium-to-high intensity bands when compared to the one recorded at 298 K. The data suggest that the blue solution contains a lower nuclearity, higher symmetry species (V(OPr i ) 4 ) than the yellow one (V 2 (OPr i ) 8 ), and this finds support in the 780-830 cm À1 absorptions assignable to m as (V-O-V) in the yellow solution, which have also been reported for a number of binuclear and polymeric vanadium oxoalkoxides (Table 1) [16][17][18][19][20][21].…”

Catalytic and antimicrobial studies of binuclear ruthenium(III) complexes containing bis-β-diketones

“…Electronic spectra were recorded in dichloromethane solution with a Systronics double beam UV-Vis Spectrophotometer 2202. 1 [27] and aryl-aryl coupling reactions have been carried out [28] by using reported literature methods.…”

Catalytic oxidation and C–C coupling reactions of new ruthenium(III) Schiff base complexes containing PPh3 or AsPh3 co-ligands

“…Cyclic voltammetric studies were carried out in acetonitrile using a glassy-carbon working electrode and potentials were referenced to standard calomel electrode. Powder XRD were recorded using a [17] and aryl-aryl coupling reactions [18] were carried out by using reported literature methods.…”

The first thermochromic vanadium(IV) alkoxide system

“…These temperatures were selected in order to largely favour the blue or the yellow species, respectively. The spectrum at 203 K is characterised by better resolution, with additional and shifted medium-to-high intensity bands when compared to the one recorded at 298 K. The data suggest that the blue solution contains a lower nuclearity, higher symmetry species (V(OPr i ) 4 ) than the yellow one (V 2 (OPr i ) 8 ), and this finds support in the 780-830 cm À1 absorptions assignable to m as (V-O-V) in the yellow solution, which have also been reported for a number of binuclear and polymeric vanadium oxoalkoxides (Table 1) [16][17][18][19][20][21].…”

Catalytic and antimicrobial studies of binuclear ruthenium(III) complexes containing bis-β-diketones

“…Electronic spectra were recorded in dichloromethane solution with a Systronics double beam UV-Vis Spectrophotometer 2202. 1 [27] and aryl-aryl coupling reactions have been carried out [28] by using reported literature methods.…”

Catalytic oxidation and C–C coupling reactions of new ruthenium(III) Schiff base complexes containing PPh3 or AsPh3 co-ligands

“…Cyclic voltammetric studies were carried out in acetonitrile using a glassy-carbon working electrode and potentials were referenced to standard calomel electrode. Powder XRD were recorded using a [17] and aryl-aryl coupling reactions [18] were carried out by using reported literature methods.…”

The first thermochromic vanadium(IV) alkoxide system

“…These temperatures were selected in order to largely favour the blue or the yellow species, respectively. The spectrum at 203 K is characterised by better resolution, with additional and shifted medium-to-high intensity bands when compared to the one recorded at 298 K. The data suggest that the blue solution contains a lower nuclearity, higher symmetry species (V(OPr i ) 4 ) than the yellow one (V 2 (OPr i ) 8 ), and this finds support in the 780-830 cm À1 absorptions assignable to m as (V-O-V) in the yellow solution, which have also been reported for a number of binuclear and polymeric vanadium oxoalkoxides (Table 1) [16][17][18][19][20][21].…”

Catalytic and antimicrobial studies of binuclear ruthenium(III) complexes containing bis-β-diketones

“…Electronic spectra were recorded in dichloromethane solution with a Systronics double beam UV-Vis Spectrophotometer 2202. 1 [27] and aryl-aryl coupling reactions have been carried out [28] by using reported literature methods.…”

Catalytic oxidation and C–C coupling reactions of new ruthenium(III) Schiff base complexes containing PPh3 or AsPh3 co-ligands

“…Cyclic voltammetric studies were carried out in acetonitrile using a glassy-carbon working electrode and potentials were referenced to standard calomel electrode. Powder XRD were recorded using a [17] and aryl-aryl coupling reactions [18] were carried out by using reported literature methods.…”