This work deals with a series of biologically important novel transition metal(II) Schiff base chelates containing terpyridine. Benzimidazole, a moiety found in broad spectrum of drugs is espoused in a Schiff base ligand system. Eight such metal(II) complexes are designed, synthesized and charac...

A novel ruthenium(III) complex with 2-aminomethyl benzimidazole (AMBI) has been synthesized and characterized by elemental analysis, spectroscopic (FTIR, UV–Vis and XRD), thermal, magnetic and electrochemical techniques. Characterization shown that the ruthenium ion is octahedral coordinated by...

The palladium-catalyzed cycloaminocarbonylation of 2-(aminomethyl)aryl tosylates with CO has been established, by which a variety of salicylaldehyde derived 2-(aminomethyl)aryl tosylates may be cyclocarbonylated in the presence of CO, to afford the corresponding substituted isoindolinones in mod...

A novel hybrid organic–inorganic perovskite, 2-(aminomethyl pyridine)SbI5 is synthesized by sol–gel method. This material with band gap of 1.82 eV demonstrated an improved photostability and photocatalytic efficiencies towards H2 generation under solar light. This work is first to report the p...

In the search for AMPA receptor (AMPAR) antagonists, 2,3-benzodiazepines represent a family of specific noncompetitive antagonists with anticonvulsant and neuroprotective properties. We have previously shown that 2,3-benzodiazepin-4-ones possess marked anticonvulsant properties and high affinity...

A series of fifteen N-phenylphthalimides including 12 4-amino- N-phenylphthalimides and three N-(3-amino-2-methylphenyl)phthalimides was prepared and evaluated for anticonvulsant properties. The compounds were tested against seizures induced by electroshock (MES) and pentylenetetrazol (scPTZ) in...

Complexation of o-phthalate (1,2-benzenedicarboxylate) and competitive complexation of phosphate and phthalate at the goethite-water interface have been studied in 0.1 M Na (NO 3) media at 298.2 K within the range 3.0

Indium trifluoromethanesulfonate (In(OTf)3) is found to be an effective catalyst for intramolecular Diels–Alder reactions of furans. This novel catalyst, soluble in both aqueous and organic media, is easily recovered from the aqueous layer after the reaction is completed.

The decomposition of the thiocyanate ion in acidic aqueous solution disturbs the complex formation reactions with gallium(III) and indium(III) to such an extent that any accurate stability constants cannot be obtained. Calorimetric studies have shown that several reactions besides the complex fo...

Whereas the soluble reagent indium(I) trifluoromethanesulfonate, InOTf, does not appear to react rapidly with chlorinated solvents, the crown ether ligated compounds [In(18-crown-6)][OTf] and [In(dibenzo-18-crown-6)][OTf] react rapidly with CH2Cl2 and CHCl3 to produce the corresponding C–Cl ins...

The soluble reagent indium(I) trifluoromethanesulfonate, InOTf, does not appear to react or interact with ferrocene (Cp2Fe, Cp = C5H5) whereas cobaltocene reacts with InOTf to produce [Cp2Co]+[OTf]− and indium metal. Unexpectedly, the reaction of InOTf with manganocene results in the formation o...

Indium(III) chloride and indium(III) trifluoromethanesulfonate were found to be excellent catalysts for the addition of thiolacetic acid to non-activated olefins. The reaction is highly regioselective and can be run in the presence of 1 mol % of catalyst.

The intramolecular Diels–Alder reaction of ester-tethered 1,7,9-decatrienoate derivatives in a mixture of water and 2-propanol was catalyzed by indium(III) triflate to give the cycloadducts in good yield with perfect endo-selectivity.

Aldehydes and ketones, including acetophenone and benzophenone, are readily protected under mild, neutral conditions in the presence of various alcohols or orthoformates and catalytic amounts of indium(III) trifluoromethanesulfonate (

The development of the coordination chemistry of dithiolene ligands is summarised, together with a consideration of the electronic structure of complexes of these ‘non-innocent’ ligands. This information provides a context for a consideration of the role of dithiolenes in natural systems, i.e....

The pterin cofactor (bactopterin) in the molybdoenzyme CO dehydrogenase isolated from Pseudomonas carboxydoflava has previously been shown to differ from molybdopterin in molecular mass, phosphate content, stability, and other properties, implying a novel structure. The structure of the CO dehyd...

Formylmethanofuran dehydrogenase from Methanobacterium thermoautotrophicum was purified to apparent homogeneity and found to contain per mol (apparent molecular mass 110 kDa) 0.6 mol molybdenum, 4 mol non-heme iron, 4 mol acid-labile sulfur, in addition, 0.7 mol of a pterin-containing co-factor ...

The molybdenum cofactor of formylmethanofuran dehydrogenase from methanol-grown Methanosarcina barkeri was isolated as the [difcarboxami-domethyl)]-derivative. The alkylated factor showed an absorption spectrum and chemical properties identical to those recently reported for the molybdenum cofac...

The narC locus required for assimilatory nitrate reduction in the cyanobacterium Synechococcus sp. strain PCC 7942 was found to carry a mobA gene for molybdopterin guanine dinucleotide biosynthesis. Insertional inactivation of this gene blocked production of nitrate reductase in Synechococcus ce...

Chemical analysis of dimethyl sulfoxide reductase fromRhodobacter sphaeroidesf. sp.denitrificanshas shown that its molybdenum center contains two molybdopterin guanine dinucleotide molecules and a single atom of molybdenum. The enzyme, which exists as a monomer of 86 kDa, was shown to contain 1 ...