Results 141 to 150 of about 5,000,063 (295)
Acta Crystallographica Section E, 2008 In the title cocrystal, [Ni(C11H10N3O2)2]·[Ni(NCS)2(C11H11N3O2)(H2O)], both NiII ions are in disorted octahedral coordination environments. One NiII ion is coordinated by four N atoms and two O atoms from two tridentate 6-(3,5-dimethyl-1H-pyrazol-1 ...
Kai Zhao +4 more
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Redetermination of picolinic acid hydrochloride at 150 K
Acta Crystallographica Section E Structure Reports Online, 2007 The structure of the title compound, C6H6NO2+·Cl−, was previously determined at ambient temperature [Laurent (1965). Acta Cryst. 18, 799–806]. This redetermination at 150 K is to a far higher precision. On cooling to 150 K, the unit cell contracts most in the π–π stacking direction, b, and rather less so in the directions involving the strongly ...
Noelia M. Sanchez-Ballester +2 more
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Correlations of Amino Acids with Secondary Structure Types: Connection with Amino Acid Structure [PDF]
arXiv, 2005 The correlations of primary and secondary structures were analyzed using proteins with known structure from Protein Data Bank. The correlation values of amino acid type and the eight secondary structure types at distant position were calculated for distances between -25 and 25.
arxiv
Beilstein Journal of Organic Chemistry, 2013 An efficient method for the synthesis of the (S)-4-(tert-butyl)-2-(pyridin-2-yl)-4,5-dihydrooxazole ((S)-t-BuPyOx) ligand has been developed. Inconsistent yields and tedious purification in known routes to (S)-t-BuPyOx suggested the need for an efficient,
Hideki Shimizu +2 more
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A Study of Metal Complexes of 2-picolinic Acid [PDF]
, 2022 Prema. S Prema. S, Leema Rose. A
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The preparation of substituted 1,2,4‐triazolines and substituted picolinic acid methylene hydrazides by the action of certain carboxamide hydrazones with ketones [PDF]
, 1973 Francis H. Case
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Physical Chemistry, Chemical Physics - PCCP, 2018 The accurate molecular structure of picolinic acid has been determined from experimental data and computed at the coupled cluster level of theory. Only one conformer with the O[double bond, length as m-dash]C-C-N and H-O-C[double bond, length as m-dash]O
N. Vogt, I. I. Marochkin, A. N. Rykov
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Linguistic mechanism of the evolution of amino acid frequencies and genomic GC content [PDF]
arXiv, 2006 Much information is stored in amino acid composition of protein and base composition of DNA. We simulated the evolution of amino acid frequencies and genomic GC content by a linguistic model. It is showed that the evolution of genetic code determines the evolution of amino acid frequencies and genomic GC content.
arxiv
Acta Crystallographica Section E, 2012 The reaction of 4-(dimethylamino)pyridine, picolinic acid and stannic chloride yields the title monosolvated salt, (C13H10NO)[SnCl4(C6H4NO2)]·CH3OH. The SnIV atom is N,O-chelated by the picolinate ion in a cis-SnNOCl4 octahedral geometry.
Ezzatollah Najafi +2 more
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