O-H...O HYDROGEN BONDS
N—H⋯O and O—H⋯O hydrogen bonds in crystal engineering: trimethoprim hydrogen glutarate
... the hydrogen glutarate ion makes a hydrogen-bonding pattern with NÐH groups of the trimethoprim cation which is similar to the carboxylate group (of Asp-27 of DHFR)-trimethoprim cation interaction observed ...
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2,2′ Dipropylmalonic acid: intermolecular association via strong O—H⋯O hydrogen bonds
... The molecular structure of (I) is shown in Fig. 1. The molecular conformation is characterized by four intersecting planes formed by propyl chains and carboxylic acid groups, and the molecule adopts a sort of ...
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4,4′ Dithiodiphenol: a chain of rings generated by two pairs of O—H⋯O hydrogen bonds
... 0.25 mmol), a solution of 4-mercaptophenol (0.252 g, 2.0 mmol) in 4 ml of MeOH was added with stirring at room temperature. The solution turned yellow immediately. After stirring for 4 h, the reac- tion solution ...
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4 [(4 Bromophenyl)amino] 2 methylidene 4 oxobutanoic acid
... and O—H···O hydrogen bonds are observed supported additionally by weak C—H···O intermolecular interactions between the 2-methylidene and amide groups (Table 1, ...
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Cylopentylamine monohydrate
... by O—H O hydrogen bonds, forming the backbone of molecular chains which run parallel to the b axis, while O—H N hydrogen bonds link the cyclopentylamine ...
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The hydrogen bonding network in (E) 1,2 bis(1 ethylbenzimidazol 2 yl)ethene dihydrate
... whilst the latter link columns of molecules (II) to these chains (Fig. 2). The result is a structure which, when viewed along the b axis, appears as two-dimensional layers parallel to the (100) planes (Fig. 3). Each ...
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Di μ acetato μ aqua bis[acetatobis(1H benzimidazole)cobalt(II)]
... intramolecular O—H O hydrogen bonds between the non- bridging acetate groups and the bridging water molecule, and intermolecular N—H O hydrogen bonds between ...
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Crystal structure of 1,2,3,4 di O methylene α D galactopyranose
... which is made up from the carbon atoms C1–C5 and O1 (Fig. 1). The chiral carbon atoms C1/C2/C4/C5 of the pyranose part show R-configuration and C3 shows S-configuration, in agreement with the expected configurations for ...
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Crystal structure of methyl 4 (4 hydroxyphenyl) 6 methyl 2 oxo 1,2,3,4 tetrahydropyrimidine 5 carboxylate monohydrate
... N—H O hydrogen ...donate O—H O hydrogen bonds to water ...N—H O hydrogen bonds from amides whereas the water molecules donate ...
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(E) 3,4,5 Trimethoxy N′ [(6 methoxy 4 oxo 4H chromen 3 yl)methylidene]benzohydrazide monohydrate
... The mean deviation of the least-square planes for the non-hydrogen atoms of the 4H-chromen-4-one segment is 0.0073 Å, and the largest deviation is 0.012 (3) Å for C6 (Fig.1) showing an essentially coplanar ...
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Crystal structure of (2 amino 7 methyl 4 oxidopteridine 6 carboxylato κ3O4,N5,O6)aqua(1,10 phenanthroline κ2N,N′)copper(II) trihydrate
... N—H O, O—H N and O— H O hydrogen bonds (Table 2) link the complex molecules and lattice water molecules into a layer parallel to (001) ...C—H O ...
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Bis(2,4,6 triaminopyrimidin 1 ium) sulfate pentahydrate
... via O—H O hydrogen ...of hydrogen- bonding interactions and – stacking leads to the formation of a three-dimensional network with alternating columns of TAPH + cations and channels ...
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[2 Hydroxy 1,1 bis(hydroxymethyl)ethyl]bis(2 hydroxyethyl)ammonium 4 nitrobenzoate monohydrate
... by O—H O hydrogen ...the O— H O hydrogen bonds, there are some weaker intra- molecular N—H O hydrogen bonds between N1 and three ...
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trans Diaquabis(ethylenediamine κ2N,N′)copper(II) bis[3 (3 pyridyl)propionate] dihydrate
... cation (en is ethylenediamine) lies on an inversion centre. The four N atoms of the en ligands in the equatorial plane around the Cu II atom form a slightly distorted square-planar arrangement, while the slightly ...
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Bis(piperazinium) di μ chloro pentachlorotriiododibismuthate(III) tetrahydrate
... through O—H O hydrogen bonds ...N—H O hydrogen bonds with their neighboring piperazium cations to form a one-dimensional chain along the a axis ...
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3 (2,4 Dichlorophenoxy) 1 (4 methoxybenzyl) 4 (4 nitrophenyl)azetidin 2 one
... In the crystal, molecules are linked by pairs of C—H O hydrogen bonds, forming inversion dimers with R2210 loops.. The dimers are linked by further C—H O hydrogen bonds, forming sheets[r] ...
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Synthesis, thermal studies and crystal structure of 4-aminopyridinium semi-oxalate hemihydrate
... Abstract: The title compound has been synthesized by grinding in an agate mortar. Its structure was characterized by TGA-DSC studies and single-crystal X-ray diffraction. This compound crystallize in the monoclinic ...
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L Asparaginium picrate
... in hydrogen bonding with the l -asparaginium residue, as shown in ...asymmetric O—H O and N— H O hydrogen bonds with the asparaginium ...
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N,N′ Bis(isonicotinoyl)hydrazine dihydrate at 120 (2) K: a three dimensional framework built from N—H⋯O, O—H⋯O, O—H⋯N and C—H⋯O hydrogen bonds
... general position. The coordination at the hydrazine atom N1 is strictly planar. The overall molecular conformation can be defined in terms of three torsion angles (Table 1), which show that the unique portion of the ...
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Pyrimethaminium 2 {[4 (trifluoromethyl)phenyl]sulfanyl}benzoate dimethyl sulfoxide monosolvate
... In the cation, the dihedral angle between the mean plane of the pyrimidinium and the 4-chlorophenyl ring is 77.2 (5)°. In the anion, the mean planes of the two phenyl rings are twisted with respect to each other by 71.5 ...
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