[PDF] Top 20 Crystal structure of a second monoclinic polymorph of 3 methoxybenzoic acid with Z′ = 1
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Crystal structure of a second monoclinic polymorph of 3 methoxybenzoic acid with Z′ = 1
... EFINEO). The asymmetric unit of I consists of two mol- ecules with different conformations (Z 0 = 2), which are connected into a homodimer through strong O—H O hydrogen bonds. As described below, these two ... See full document
7
A second monoclinic polymorph of 2 amino 4,6 dichloropyrimidine
... The crystal structure of the title compound (I) was previously reported by Clews & Cochran (1948) in the monoclinic space group P21/a, with a = ...and Z = ...the monoclinic space ... See full document
8
A second monoclinic polymorph of 1 (2,4 dihydroxy 6 methoxyphenyl) 3 (4 methoxyphenyl)propan 1 one
... both molecules A and B, the methoxy groups are coplanar with the attached benzene rings. The molecular structure is stabilized by intramolecular O—H O hydrogen bonds (Table 2). The symmetry-related molecules are ... See full document
13
A new monoclinic polymorph of N (3 methylphenyl)ethoxycarbothioamide: crystal structure and Hirshfeld surface analysis
... The crystallographic asymmetric unit of (Ip), Fig. 1, comprises two independent molecules which are chemically indis- tinguishable, Table 1. The thione-S and thioamide-N—H atoms are syn in each molecule and ... See full document
15
A second monoclinic modification of benzimidazolium 3 carboxyphenoxyacetate 3 carboxyphenoxyacetic acid
... solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to re®ne structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: ... See full document
9
A monoclinic polymorph of [(Z) N (3 chlorophenyl) O methylthiocarbamato κS](triphenylphosphane κP)gold(I): crystal structure and Hirshfeld surface analysis
... are collected in Table 1. The gold(I) atom is coordinated in an approximately linear configuration by phosphane-P and thiolate-S atoms. Confirmation of the ‘thiolate’ assignment is readily seen in the relatively ... See full document
12
Crystal structure of a second triclinic polymorph of 2 methylpyridinium picrate
... and 3-methylpyridine yielded 3-methylpyridinium picrate, a triclinic polymorph (Gomathi & Kalaivani, ...of 3-methylpyridine in the reaction mixture, yielded 2-methyl- pyridinium picrate ... See full document
11
Crystal structure of a new polymorph of (2S,3S) 2 amino 3 methylpentanoic acid
... zwitterions and organized in pairs. The hydrophilic parts of the molecules are facing each other and generate intermolecular N—H O hydrogen bonds (Table 1), within the pair and with symmetry-related pairs. The ... See full document
12
Crystal structure of 4 [(2 hydroxy 3 methoxybenzyl)amino]benzoic acid hemihydrate
... Compound (1) (1.00 g, 3.7 mmol) was dissolved in 25 mL of methanol and reduced by addition of excess sodium borohy- dride (0.28 g, 7.4 mmol). The solution was stirred until the yellow colour disappeared. Then the ... See full document
9
Crystal structure of 4 (trimethylgermyl)benzoic acid
... isotypic structure containing silicon instead of germa- nium, similar distortions can be observed (Haberecht et ...this structure, the asymmetric unit also contains two differently deformed ...The ... See full document
9
Crystal structure of 2 (4 chlorobenzamido)benzoic acid
... The crystal structure determination of 2-(4-chlorobenzamido)benzoic acid, (I), was investigated in a continuation of our studies on substituted N-phenyl benzamides which have been synthesized ... See full document
7
2 Hydroxy 6 isopropyl 3 methylbenzoic acid
... X-ray crystal structure of benzoic acid, see: Bruno & Randaccio ...the crystal structure of benzoic acid applying neutron radiation, see: Wilson et ...the ... See full document
8
The second orthorhombic polymorph of zwitterionic metanilic acid at 130 K
... The crystal structures of the ortho- and meta-substituted monoaminobenzenesulfonic acids, orthanilic acid (Hall & Maslen, 1967) and metanilic acid (Hall & Maslen, 1965), show zwitterionic ... See full document
8
Crystal structure of a new monoclinic polymorph of N (4 methylphenyl) 3 nitropyridin 2 amine
... (Akhmad Aznan et al., 2010), and the present polymorph was isolated from a failed co-crystallization experiment as detailed in Section 5. The phenomenon of isolating polymorphs from co-crystallization experiments ... See full document
15
Crystal structure and Hirshfeld analysis of 2 [bis(1 methyl 1H indol 3 yl)methyl]benzoic acid
... (Fig. 1) crystallizes in the triclinic system with space group P1 and Z = ...a benzoic acid [C1–C7 (C)] system linked via the tertiary C8 atom, with dihedral angles between them of A/B = ... See full document
10
Crystal structure of 3 methylpyridinium picrate: a triclinic polymorph
... Geometry . All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, ... See full document
8
Crystal structure of the tetragonal polymorph of bis(1 ethyl 3 methylimidazolium) tetrabromidocadmate
... ratio 2:2:1 was mixed with 2 g of molten emimBr and placed in a teflon container into a steel autoclave. A heating regime with three steps was chosen: the autoclaves were heated from 293 to 493 K (four h), held at ... See full document
9
A monoclinic polymorph of 2-(4-nitrophenyl)acetic acid
... 4-nitrophenylacetic acid occurred during an attempt to synthesize a salt form of N-methylephedrine by reaction with the acid (Kennedy et ...nitrophenylacetic acid was dissolved in 5 ml of deionized ... See full document
6
Ethyl (E) 2 cyano 3 (4 methylphenyl)acrylate: a second monoclinic polymorph
... p -Toluic aldehyde (0.50 g), ethyl cyanoacetate(0.51 g), and ammonium acetate (0.32 g) were dissolved in 30 ml of ethanol and refluxed for about 4 h to give crude product as a solid. The precipitation was filtered, ... See full document
6
Crystal structure of 4 [4 (ethoxycarbonyl)piperazin 1 yl]benzoic acid
... Crystal data, data collection and structure refinement details are summarized in Table 2. H atoms were placed in calculated positions with C—H = 0.95–0.99 A ˚ , O—H = 0.84 A˚ and included in the refinement ... See full document
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