In the crystal structure of the title compound, [KV(C(10)H(13)N(2)O(8))O(H(2)O)(3)](n), the V(IV) ion adopts a distorted octa-hedral geometry, coordinated by one oxide group, two N and three carboxylate O atoms from the same N'-carboxy-methyl-ethyl-ene-diamine-N,N,N'-triacetate (HEDTA) ligand. The potassium ion is hepta-coordinated by two water mol-ecules, two bridging water mol-ecules and thre...

Carboxylic acids are ubiquitous in bio-renewable and petrochemical sources of carbon. Hydrogenation of carboxylic acids to yield alcohols produces water as the only byproduct, and thus represents a possible next generation, sustainable method for the production of these alternative energy carriers/platform chemicals on a large scale. Reported herein are molecular insights into cationic mononucl...

Oleate-stabilized silver colloids of 5-nm-diameter were adsorbed to a toluene/water interface, and surface enhanced Raman scattering (SERS) spectra from these colloids were measured under the total internal reflection (TIR) condition. From the observed spectra, we examined the states of oleate ions and toluene molecules on silver colloids at the liquid/liquid interfacial region. The TIR-SERS sp...

We found that the Fischer indole synthesis of ethyl pyruvate 2-methoxyphenylhydrazone (5) with HCl/EtOH gave an abnormal product, ethyl 6-chloroindole-2-carboxylate (7), as the main product, with a smaller amount of ethyl 7-methoxyindole-2-carboxylate (6) as the normal product. This abnormal reaction was the result of a cyclization on the side with the substituent (methoxy group) of a benzene r...

Abract: This investigation was Planned to study, by PH measurements and titration method quantitively, the inter action of free acid group present in each mix of different types of poly carboxylate cements with enamel, dentin, Copper, chromium Oxide and nickel. Results: it was found that, the highest PH value in case PCA cement and highest reachivity when compared with Durelon and carboxylon ce...

4-n- prophyl- 1,2,4- triazoline-3-5- dione was synthesized from n-propylisocyanate and ethylhydrazine carboxylate in several steps. the title compound was isolated as pink crystals in high yield and purity. this compound was fully characterized by ir and h-nmr spectroscopy

Through the strategic design of ligands based on amino acids, structural diversity in chiral coordination architectures of CuII is demonstrated with six new examples: {[Cu(L-HTyrbenz)2]·CH3OH·H2O}n (1), {[Cu(L-HSerbenz)2]·3H2O}n (2), {[Cu(L-HTyrthio)2]·H2O}n (3), [Cu(L-HTyr4-pyr)2(H2O)]·2H2O (4), [Cu(L-HSerthio)2(H2O)] (5), and [Cu(L-Phethio)2(H2O)]·3H2O (6) [where L-H2Tyrbenz = L-N-(benzyl)-ty...

For the first time, 5-formyl-1-(pyridin-3-yl)-1H-1,2,3-triazole-4-carboxylate was synthesized via a two-step scheme. The molecular structure of compound determined by single-crystal X-ray diffraction analysis. Hirshfeld surface analysis used to study various intermolecular interactions. crystalline is marked presence three types ?-interactions (n??*, lp···?, and ?···?) between -C(H)=O group tri...

The majority of glycoside hydrolases is strongly inhibited by monosaccaride derivatives bearing a basic NH—group adjacent to C—i, i. e. by glycosylanines, 5—amino—5—deoxyhexopyranoses, and 1,5—iminoalditols. This inhibition with Kr—values up to 104—tines smaller than those of neutral analogs is explained by a catalytic site which features an acid and a carboxylated in iuxtaposition close to the...