[PDF] Top 20 Diphenic acid–4,4′ bipyridine (2/1)
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Diphenic acid–4,4′ bipyridine (2/1)
... diphenic acid molecule and the other half of the bipyridine molecule are generated by the inversion symmetry (2 ÿ x, 1 ÿ y, ÿz) and (1 ÿ x, 2 ÿ y, 1 ÿ z), ...the ... See full document
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1:1 Cocrystal of 2,5 bis(4 pyridyl) 1,3,4 oxadiazole and pyridine 2,3 dicarboxylic acid
... O—H N and C—H O hydrogen bonds link the two molecules to form a helical supramolecular tape along the crystallographic [010] direction, as shown in Fig. 2. These one- dimensional helical chains are further ... See full document
7
1,10 Phenanthrolinium 4 chloro 2 hydroxybenzoate–1,10 phenanthroline–4 chloro 2 hydroxybenzoic acid (1/1/1)
... between pyridine rings of adjacent phen and Hphen species is 3.7718 (15) A ˚ , and that between the benzene and pyridine rings of adjacent phen and Hphen species is 3.7922 (16) A ˚ , indicative of – ... See full document
12
Bis(1,10 phenanthroline)(pyridine 2,6 dicarboxylato)cadmium(II)–pyridine–2,6 dicarboxylic acid–water (1/1/4)
... Some of the water H atoms could be located in Fourier difference maps. In the ®nal re®nement cycles they were either re®ned with an OÐH distance restraint of 0.90 (2) AÊ or as riding on their carrier O atom. The ... See full document
13
Pyridine 4 carbaldehyde–fumaric acid (2/1)
... of pyridine-4-carbox- aldehyde in cytokine suppressive drugs, see: Boehm et ...neutral pyridine derivatives and neutral fumaric acid, see: Bowes et ... See full document
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Crystal structure of 4 chloro 2 nitrobenzoic acid with 4 hydroxyquinoline: a disordered structure over two states of 4 chloro 2 nitrobenzoic acid–quinolin 4(1H) one (1/1) and 4 hydroxyquinolinium 4 chloro 2 nitrobenzoate
... benzoic acid–pyridine derivative systems, we have shown that several compounds, namely, three compounds of quinoline with 3-chloro-2-nitrobenzoic acid, 4-chloro-2-nitrobenzoic ... See full document
9
2 (4 Methyl 2 phenylpiperazin 4 ium 1 yl)pyridine 3 carboxylate dihydrate
... of 1-butanol were added 2-(4-methyl-2-phenylpiperazine-1-yl)pyridine-3-carbonitrile(54 g, ...hydrochloric acid to ... See full document
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Redetermination of pyridine 4 carbonitrile–chloranilic acid (1/1) at 180 K
... one pyridine-4-carbonitrile molecule and one chloranilic acid molecule ...(Fig. 1). Two chloranilic acid molecules related by an inversion centre are held together by O—H···O hydrogen ... See full document
7
Adipic acid–2,6 bis(1H benzimidazol 2 yl)pyridine–water (1/2/4)
... The title compound was obtained by 2,6-bis(benzimidazol-2-yl)pyridine (0.062 g, 0.20 mmol) and adipic acid (0.029 g, 0.20 mmol) dissolved in 30 ml solution mixed with ethanol and water by ... See full document
7
N′ [(E) 1 (2 Fluorophenyl)ethylidene]pyridine 4 carbohydrazide
... of pyridine-4-carbohydrazide (0.137 g, 1 mmol) and 1-(2-fluorophenyl)ethanone ...g, 1 mmol) was refluxed, in presence of a few drops of glacial acetic acid for 6 ...P ... See full document
9
Crystal structures of 4 methoxybenzoic acid–1,3 bis(pyridin 4 yl)propane (2/1) and biphenyl 4,4′ dicarboxylic acid–4 methoxypyridine (1/2)
... pseudo-inversion symmetry. Similar to compound (I), the H atoms in the hydrogen bonds are disordered over two sites, with occupancy ratios of 0.68 (3):0.32 (3) between atoms O1 and N1, and 0.75 (3):0.25 (3) between atoms ... See full document
18
Corrosion Inhibition and Adsorption Behavior of 4–Amino Acetophenone Pyridine 2-Aldehyde in 1 M Hydrochloric Acid
... as acid inhibitors [13-16]. Heterocyclic compounds, such as pyridine, pyridine derivatives, pyrazole, triazole, tetrazole, benzotriazole, benzimidazole, and benzothiazole derivatives, have also been ... See full document
16
4 (2 Isonicotinoylhydrazino) 4 oxobutanoic acid
... Fig. 1 shows an ORTEP-3 (Farrugia, 1997) view of the title compound, ...Table 1. As expected, the pyridine ring is planar and shows nearly equal CÐC distances [mean distance ...the pyridine ... See full document
6
Pyridine 2,6 dicarboxylic acid–pyridine 4 carboxamide–water (1/1/1)
... (1.67 g, 10 mmol) and pyridine-4-carboxamide (1.52 g, 10 mmol) in tetrahydrofuran (30 ml) was refluxed for 10 h. After filtration and removal of the solvent, a white powder was obtained. Colourless crystals ... See full document
7
2 (1,3 Dioxoisoindolin 2 yl)acetic acid–N′ [(E) 4 methoxybenzylidene]pyridine 4 carbohydrazide (2/1)
... The cocrystallized solid (I) was obtained unintentionally from a reaction of 0.01 mol (2.55 g) of N′-[(E)-(4-methoxy- phenyl)methylidene]pyridine-4-carbohydrazide with 0.02 mol (4.10 g) of ... See full document
13
4 [(E) 2 (Pyridin 2 yl)ethenyl]pyridine–terephthalic acid (2/1)
... connected through additional weak C—H···O contacts to generate tapes parallel to the (1–41) series of planes, which through C—H···π contacts generate undulating two-dimensional supramolecular layers (Fig. 2 ... See full document
8
Crystal structures of three co crystals of 4,4′ bipyridyl with 4 alkoxybenzoic acids: 4 ethoxybenzoic acid–4,4′ bipyridyl (2/1), 4 n propoxybenzoic acid–4,4′ bipyridyl (2/1) and 4 n butoxybenzoic acid–4,4′ bipyridyl (2/1)
... the 2:1 units are linked by C—H O interactions (Tables 2 and 3), forming a double- tape structure along the a axis ...(Tables 2 and ...the 2:1 unit, is shown in ... See full document
25
2 Aminobenzoic acid–4 [2 (pyridin 4 yl)ethyl]pyridine (2/1)
... O1 0.0346 (5) 0.0189 (5) 0.0145 (4) 0.0008 (4) −0.0047 (4) −0.0020 (3) O2 0.0306 (5) 0.0181 (4) 0.0170 (4) 0.0008 (3) −0.0013 (3) 0.0020 (3) N1 0.0359 (6) 0.0157 (5) 0.0175 (5) 0.0027 ... See full document
9
4 [5 (4 Pyridyl) 1,3,4 oxadiazol 2 yl]pyridine N oxide–isophthalic acid (1/1)
... acid and pyridyl-N-oxide ring and pyridyl ring are 1.4° and 7.0°, respectively, which are similar to previously reported experimental values (Du et al., 2006; Tan et al., 2006). In addition to the specific ... See full document
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2 (4 Bromophenyl) 4 (4 methoxyphenyl) 6,7,8,9 tetrahydro 5H cyclohepta[b]pyridine
... C9 0.089 (3) 0.090 (3) 0.074 (2) −0.008 (2) 0.015 (2) −0.023 (2) C10 0.073 (2) 0.085 (3) 0.0592 (19) −0.001 (2) 0.0102 (16) −0.0013 (18) C11 0.0635 (18) 0.0493 (18) 0.0532 (16) ... See full document
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