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Sulfones crystal structure

Oxetane, 3,3-bis(trimethylaminomethyl)-methane sulfonate X-ray crystal structure, 7, 365 Oxetane, 3-bromo-synthesis, 7, 390 Oxetane, 2-t-butyl-3-methyl-synthesis, 7, 399 Oxetane, 2-chloro-reactions, 7, 390 Oxetane, 3-chloro-synthesis, 7, 390... [Pg.732]

Vaterite is thermodynamically most unstable in the three crystal structures. Vaterite, however, is expected to be used in various purposes, because it has some features such as high specific surface area, high solubility, high dispersion, and small specific gravity compared with the other two crystal systems. Spherical vaterite crystals have already been reported in the presence of divalent cations [33], a surfactant [bis(2-ethylhexyl)sodium sulfate (AOT)] [32], poly(styrene-sulfonate) [34], poly(vinylalcohol) [13], and double-hydrophilic block copolymers [31]. The control of the particle size of spherical vaterite should be important for application as pigments, fillers and dentifrice. [Pg.149]

Crystal structures are available for many (N)4Co-amino acid complexes (Table I). Many of the diastereomers (AS, AS) in the bis-en series have been resolved using classic crystallization (usually via bromocamphor sulfonate, arsenyl-, or antimonyl-tartrate salts) or ion exchange methods (Table II). Reversed-phase ion-pair HPLC, using aryl phosphate or aryl/alkyl sulfonate ion pairing reagents in MeOH/ H20 eluent, has allowed diastereomer separations to be carried out on analytical amounts (28) (Table II). [Pg.315]

Diederich and coworkers [10] synthesized so-called dendrophanes (Figure 13.6) containing a paracyclophane core embedded in dendritic poly(ether-amide) shells. X-ray crystal-structure analysis indicated that these dendrimers had an open cavity binding site in the center, suitable for the binding of aromatic guests. NMR and fluorescence titration experiments revealed a site specific binding between these dendrimers and 6-(p-toluidino)naphthalene-2-sulfonate (TNS) with a 1 1 association. Also, the fluorescence spectral shift of TNS, which is... [Pg.315]

As a further example of a solid-solid transformation associated with reorganization of bonds, we take the process described by Bergman and co-workers (81). These investigators have found that solid methyl p-dimethylaminobenzene-sulfonate (36a) is cleanly converted to the p-trimethylammonium benezenesul-fonate zwitterion (36b) on standing at room temperature, and more rapidly so at higher temperatures, whereas even the most concentrated solutions of this compound remain unchanged at these temperatures. Crystal structure analysis... [Pg.153]

H. S., and McKay, D. B. Crystal structure of HslUV complexed with a vinyl sulfone inhibitor corroboration of a proposed mechanism of allosteric activation of HslV by HslU./. Mol. Biol. 2002, 338, 779-785. [Pg.286]

Fig. 4. X-Ray crystal structure of vinzolidine 1-naphthalene sulfonate [coordinates from Jones et al. (40). ... Fig. 4. X-Ray crystal structure of vinzolidine 1-naphthalene sulfonate [coordinates from Jones et al. (40). ...
The plant soluble STs have around 25 to 30% amino acid identity with mammalian soluble STs, and are of a similar size. Comparisons between F. chloraefolia F3ST and F4 ST, combined with mutational analysis and data from the crystal structure of mouse estrogen ST, have defined amino acid residues important for PAPS binding, substrate binding and catalysis, and the mechanism of sulfonate transfer. " Sequence relatedness has been used to divide the STs into families and subfamilies in a similar manner as for P450s. ... [Pg.171]

More recently, the crystal structures of several silver sulfonates have been determined those containing methanesulfonate,332 bromomethanesulfonate333 and pyridinesulfonate.334 In the first of these, no distinct molecule of the silver salt was found in the unit cell. The silver atom was five-coordinate with a very distorted trigonal bipyramidal arrangement. Ag—O bond distances were in the range 234-263 pm. Each silver was bound to five different methanesulfonates.332... [Pg.818]

It was found that the cyclic vinyl sulfone with t-BuOOLi yielded only a single stereoisomer. The structure was established as the anti-epoxide by an X-ray crystal structure... [Pg.1228]

X-Ray structural analysis of bridged biphenyls containing sulfoxide, and sulfone functions in the bridge, 1,11 -dimcthyl-5,7-dihydrodibenzo[rv ]thiepine. V-oxide 24 and. Y,.Y-dioxide 25 in racemic form, was undertaken <2000HGA479>. The crystals of both 24 and 25 are centrosymmetric (RAY). The crystal structures of 24 and 25 (Table 6) showed similar twisted biphenyl moieties with dihedral angles (9) (C(2)-C(l)-C(8)-C(9) and C(6)-C(l)-C(8)-C(13)) in the range of 62.5-65.0°. [Pg.103]

In addition, the X-ray crystal structures of two 1,4-oxathiane derivatives were published (00AX1510, 01AX560) the di-axial conformation of the hydroxymethyl group in position 3 and of the l,9-dihydro-6//-purin-6-one group in position 6 in compound 82 is surprising (01AX560) (cf. Scheme 30). The X-ray structures of the sulfones of the isomeric 2,6-di-OEt-3-OMe-l,4-oxathianes were published (00CEJ1858) the 4,4-dioxa-... [Pg.77]


See other pages where Sulfones crystal structure is mentioned: [Pg.45]    [Pg.471]    [Pg.45]    [Pg.471]    [Pg.955]    [Pg.648]    [Pg.30]    [Pg.442]    [Pg.249]    [Pg.29]    [Pg.357]    [Pg.231]    [Pg.254]    [Pg.255]    [Pg.386]    [Pg.42]    [Pg.381]    [Pg.674]    [Pg.107]    [Pg.759]    [Pg.644]    [Pg.95]    [Pg.206]    [Pg.119]    [Pg.48]    [Pg.976]    [Pg.800]    [Pg.169]    [Pg.334]    [Pg.245]    [Pg.386]    [Pg.140]    [Pg.148]    [Pg.152]    [Pg.155]    [Pg.182]   
See also in sourсe #XX -- [ Pg.36 ]

See also in sourсe #XX -- [ Pg.36 ]

See also in sourсe #XX -- [ Pg.36 ]

See also in sourсe #XX -- [ Pg.36 ]

See also in sourсe #XX -- [ Pg.36 ]




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Structure sulfone

Sulfone, benzyl phenyl crystal structure

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