5326-82-9Relevant academic research and scientific papers
Synthesis and X-ray crystallographic characterization of two different inorganic-organic hybrid isopolyoxomolybdates with α-dipropylammonium N,N-diisobutylacetamide by varying reaction conditions
Sharma, Shikha,Ghosh, Sunil K.,Kumar, Mukesh,Sharma, Joti N.
, p. 290 - 295 (2015)
Two new polyoxomolybdate based inorganic-organic hybrid compounds have been obtained from same ammonium ion ligand 1 and molybdate source just by altering reaction conditions. The new hybrid polyoxomolybdate complexes (LH)2[Mo6O19] 3 and (LH)4[Mo8O26] (MeCN)2 4 have distinct structural features revealed by X-ray crystallographic studies. The complex 3 contains two ammonium ligands to balance the charge on hexamolybdate dianion. The most striking feature of (LH)2[Mo6O19] is the presence of inter-ligand hydrogen bonding (N-HaO=C) between two ligands arranged in an antiparallel fashion that favors the formation of a net like structure which embeds the Mo6O19 dianion. The complex 4 contains four ammonium ligands to balance the charge on β-octamolybdate tetraanion. Interestingly, complex 4 exhibits strong hydrogen-bonding interactions between ammonium ligand and octamolybdate anion (N-HaO-Mo) and no inter-ligand H-bonding interaction. The different structural features of hybrid compounds 3 and 4 suggest that different polyoxomolybdate clusters play a key role in the process of assembling of ligands.
α-Dialkylamino N,N-diisobutylacetamides: A new class of anion exchanger with intramolecular buffering properties
Sharma, Shikha,Ghosh, Sunil K.,Anitha,Sharma, Joti N.
, p. 27837 - 27842 (2014)
A new class of ammonium based anion exchangers embedded with a terminal amide group, viz. α-dialkylamino N,N-diisobutylacetamides has been designed, synthesized and tested for their ability to extract oxometalate anions from nitric acid medium. As a representative example, the molybdate anion has been chosen for the present studies and its extraction behaviour was compared with routinely used anion exchangers like Alamine 336, Aliquat 336 and Primene JMT having no amide functionality. A higher %E value for molybdate was observed with α-dialkylamino N,N-diisobutylacetamides compared to Alamine 336, Aliquat 336 and Primene JMT, from the same HNO3 acidity. The presence of amide group in the ligand is the key to the success of extraction from a relatively higher concentration of nitric acid medium. The amide group in the extractant leads to extra acidity through the intramolecular buffering effect thus enabling the ligand to extract the molybdate anion at higher acidities. Stoichiometry of the ion pair formed during extraction was ascertained by the slope analysis method. The composition of the complex was found to be (LH) 2MoO4·HNO3. FTIR and NMR of the loaded extractant indicated that MoO42- is associated with the ammonium site while binding of HNO3 occurred at the amide group. This journal is the Partner Organisations 2014.
COMPARATIVE STUDY OF NEUTRAL CARRIERS IN POLYMERIC LITHIUM ION SELECTIVE ELECTRODES.
Gadzekpo,Hungerford,Kadry,Ibrahim,Xie,Christian
, p. 1948 - 1953 (1986)
New lipophilic diamide compounds have been synthesized and tested as ionophores for lithium in poly(vinyl chloride) (PVC) membrane electrodes, including compounds with pyridine, furan, dioxanonane, and polyether backbones with different lipophilic diamide groups. The new ionophores were compared with previously reported ionophores under similar measurement conditions with the same plasticizer, tris(2-ethylhexyl) phosphate, in all membranes. Fixed interference and matched potential methods were used to determine relative selectivity coefficients for all the electrodes.
Improved procedure for the synthesis of enamine N-oxides
Bernier, David,Blake, Alexander J.,Woodward, Simon
, p. 4229 - 4232 (2008/09/20)
(Chemical Equation Presented) An improved procedure for the preparation of enamine N-oxides involving aminolysis of epoxides, chlorination, N-oxidation, and dehydrochlorination is described. Although isolated β-chloroamine N-oxides are prone to rearrangem
