نتایج جستجو برای: crystal form

تعداد نتایج: 837146  

2003
Robert I. Haines

The pendant-arm macrocycle, meso-5,5,7,12,12,14-hexamethyl-1,4,8,11tetraazacyclotetradecane-1,8-di-(1-methylnaphthalene) has been synthesized and its single crystal structure determined. The molecule crystallizes in a primitive monoclinic cell, with the space group P21/a (#14). The cell dimensions are a = 10.778(3)Å, b = 13.809(3) Å, c = 11.420(2) Å, ∃ = 102.49(2)°, volume = 1659.5(6) Å.

2015
Joel T. Mague Shaaban K. Mohamed Mehmet Akkurt Sabry H. H. Younes Mustafa R. Albayati

In the title compound, C16H12N2O3, the 2H-chromene moiety is essentially planar, with an r.m.s. deviation of the nine constituent atoms from the mean plane of 0.0093 Å, and makes a dihedral angle of 76.84 (3)° with the pendant phenyl ring. An intra-molecular N-H⋯O hydrogen bond helps to determine the conformation of the side chain. In the crystal, N-H⋯O and N-H⋯N hydrogen bonds link the mol-ecu...

1999
CHRIS W. PATTERSON DAVID HANSON ANTONIO REDONDO STEPHEN L. SCOTT NEIL HENSON

From conformational analysis, we have determined the two lowest energy crystal structures for the hard segments of 4,49-diphenylmethane diisocyanate/1,4butanediol (MDI/BDO)-based polyurethane elastomer. Both crystal forms give prominent X-ray scattering at ;7.6 Å. In one crystal form, (1), there is strong hydrogen bonding between linear chains with a density of 1.30 g/cm, while in the other for...

Journal: :physical chemistry and electrochemistry 0

the crystal structure of the title schiff base complex is obtained by single-crystal x-ray diffraction data.the solid state structure determination reveals that the coordination geometry around the copper(ii) center istetrahedrally distorted square-planar. the crystal packing shows one dimensional infinite chains which arisesfrom the intermolecular interaction and stabilize the crystal packing.

Journal: :Protein science : a publication of the Protein Society 1993
J P Priestle J Rahuel H Rink M Tones M G Grütter

The three-dimensional structures of D-Phe-Pro-Arg-chloromethyl ketone-inhibited thrombin in complex with Tyr-63-sulfated hirudin (ternary complex) and of thrombin in complex with the bifunctional inhibitor D-Phe-Pro-Arg-Pro-(Gly)4-hirudin (CGP 50,856, binary complex) have been determined by X-ray crystallography in crystal forms different from those described by Skrzypczak-Jankun et al. (Skrzyp...

Journal: :Acta crystallographica. Section D, Biological crystallography 1998
K Zeth V Schnaible M Przybylski W Welte K Diederichs H Engelhardt

Omp32, the strongly anion-selective porin from Comamonas acidovorans, has been crystallized. Two crystal forms were observed, both of which belong to space group R3, but exhibit different cell dimensions a = b = 106.7, c = 140.6 A (crystal form I) and a = b = 87.1, c = 135.3 A (crystal form II) with one trimer per asymmetric unit. The crystals diffract to 2.2 and 2.3 A resolution, respectively....

قوی, جمال, مظاهری, سید احمد, پن, یانمینگ, کریم‌پور, محمدحسن,

Erythrite (Co3 (AsO4)28H2O) is one of the rare arsenic minerals which belong to the vivianite group. A recent discovery in Tarikdarreh prospect area (northeastern Iran) found erythrite along with scorodite and hydroxides of iron have been recognized as a supergene alteration product of primary arsenic mineral in surface arsenopyrite ± pyrite mineralization veins zones. A specimen of erythrite h...

Journal: :Protein science : a publication of the Protein Society 2000
B W Segelke M Forstner M Knapp S D Trakhanov S Parkin Y M Newhouse H D Bellamy K H Weisgraber B Rupp

An amino-terminal fragment of human apolipoprotein E3 (residues 1-165) has been expressed and crystallized in three different crystal forms under similar crystallization conditions. One crystal form has nearly identical cell dimensions to the previously reported orthorhombic (P2(1)2(1)2(1)) crystal form of the amino-terminal 22 kDa fragment of apolipoprotein E (residues 1-191). A second orthorh...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2011

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید