scholarly journals 3,4,7,8-Tetramethyl-1,10-phenanthrolin-1-ium nitrate monohydrate

2012 ◽  
Vol 68 (6) ◽  
pp. o1931-o1932
Author(s):  
Ke-Jie Zhang ◽  
Yan-Fang Zhang
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Water Molecule ◽  
Title Compound ◽  
Mirror Plane ◽  
Water Molecules ◽  
Lattice Water ◽  
Compound C ◽  
Centroid Distance ◽  
Nitrate Anions

In the crystal of the title compound, C16H17N2 +·NO3 −·H2O, the tetramethyl-1,10-phenanthrolinium cations, nitrate anions and lattice water molecules are all located on a mirror plane with the methyl H atoms of the cation equally disordered over two sites about the mirror plane. The cation, anion and water molecule are linked by O—H...O and N—H...O hydrogen bonds into a sheet parallel to the bc plane. π–π stacking between phenanthroline ring systems is observed in the crystal structure, the centroid–centroid distance being 3.4745 (6) Å.

Bis(4-carboxypyridinium) aquapentakis(isothiocyanato-κN)iron(III) bis(pyridinium-4-carboxylate)

2007 ◽  
Vol 63 (11) ◽  
pp. m2640-m2640 ◽  
Author(s):  
Xiu-Ling Li ◽  
Zai-Sheng Lu ◽  
De-Zhong Niu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Water Molecule ◽  
Title Compound ◽  
Iron Complex ◽  
Electrostatic Attraction ◽  
Mirror Plane ◽  
Compound C ◽  
Coordinated Water

In the crystal structure of the title compound, (C6H6NO2)2[Fe(NCS)5(H2O)]·2C6H5NO2, the iron complex lies on a mirror plane; the six-coordinate FeIII ion, the coordinated water molecule and three of the five isothiocyanate ligands are located on this plane. The crystal structure is triple-layered. The pyridinium-4-carboxylate (ina) molecules and the protonated 4-carboxypyridinium (inaH+) cations interact with each other through N—H...O and O—H...O hydrogen bonds, leading to the formation of a layer perpendicular to the b axis. Pairs of these layers sandwich another layer of {[Fe(NCS)5(H2O)]2−} n anions with which they interact via electrostatic attraction and O—H...O hydrogen bonds, resulting in sheets of triple layers also perpendicular to the b axis.

scholarly journals Crystal structure of 1,1′-(pyridine-2,6-diyl)bis[N-(pyridin-2-ylmethyl)methanaminium] dichloride dihydrate

2021 ◽  
Vol 77 (12) ◽  
Author(s):  
Layachi Merabet ◽  
Marine Tassé ◽  
Sonia Mallet-Ladeira ◽  
Lakhemici Kaboub ◽  
Isabelle Malfant
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Crystal Packing ◽  
Water Molecules ◽  
Π Interactions ◽  
Lattice Water ◽  
Compound C

In the title compound, C19H23N5 2+·2Cl−·2H2O, the two pyridine side arms are not coplanar, with the terminal pyridine rings subtending a dihedral angle of 26.45 (6)°. In the crystal, hydrogen bonds, intermolecular C—H...Cl contacts and a weak C—H...O interaction connect the molecule with neighbouring chloride counter-anions and lattice water molecules. The crystal packing also features by π–π interactions with centroid-centroid distances of 3.4864 (12) and 3.5129 (13) Å.

Pyrimethaminium nicotinate monohydrate

2007 ◽  
Vol 63 (11) ◽  
pp. o4452-o4452 ◽  
Author(s):  
Kasthuri Balasubramani ◽  
Packianathan Thomas Muthiah ◽  
Gabriele Bocelli ◽  
Andrea Cantoni
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Water Molecule ◽  
Title Compound ◽  
Amino Group ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Graph Set ◽  
Ring Motif

In the title compound, C12H14ClN4 +·C6H4NO2 −·H2O, the pyrimethamine molecule is protonated at one of the pyrimidine N atoms. The protonated N atom and 2-amino group of the cation interact with an adjacent nicotinate anion through a pair of N—H...O hydrogen bonds [graph set R 2 2(8)]. The cation, anion and water molecule form a hydrogen-bonded ring motif with graph-set notation R 4 2(8). The crystal structure is further stabilized by N—H...O and O—H...O hydrogen bonds and π–π interactions [centroid–centroid distance = 3.637 (6) Å].

scholarly journals Crystal structure of bis(propane-1,3-diaminium) hexafluoridoaluminate diaquatetrafluoridoaluminate tetrahydrate

2014 ◽  
Vol 70 (12) ◽  
pp. 471-473
Author(s):  
Insaf Abdi ◽  
Khulood Al-Sadhan ◽  
Amor Ben Ali
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Water Molecule ◽  
Aluminium Hydroxide ◽  
Solvothermal Method ◽  
Three Dimensional ◽  
Mirror Plane ◽  
Water Molecules ◽  
Asymmetric Unit ◽  
Compound C

The title compound, (C3H12N2)2[AlF6][AlF4(H2O)2]·4H2O, was obtained by a solvothermal method in ethanol as solvent and with aluminium hydroxide, HF and 1,3-diaminopropane as educts. The asymmetric unit contains a quarter each of two crystallographically independent propane-1,3-diammonium dications, [AlF6]3−and [AlF4(H2O)2]−anions and four water molecules. The cations, anions and three of the independent water molecules are situated on special positionsmm, while the fourth water molecule is disordered about a mirror plane. In the crystal, intermolecular N—H...F and O—H...F hydrogen bonds link the cations and anions into a three-dimensional framework with the voids filled by water molecules, which generate O—H...O hydrogen bonds and further consolidate the packing.

scholarly journals Crystal structure of new organically templated copper sulfate with 2-aminopyridinium

2015 ◽  
Vol 71 (11) ◽  
pp. m191-m192 ◽  
Author(s):  
Tamara J. Lukianova ◽  
Vasyl Kinzhybalo ◽  
Adam Pietraszko
Keyword(s):  
Crystal Structure ◽  
Copper Sulfate ◽  
Title Compound ◽  
Three Dimensional ◽  
Water Molecules ◽  
Organic Layers ◽  
Π Interactions ◽  
Lattice Water ◽  
Compound C ◽  
Centroid Distance

The title compound, (C5H7N2)2[Cu(H2O)6](SO4)2·4H2O [systematic name: bis(2-aminopyridinium) hexaaquacopper(II) bis(sulfate) tetrahydrate], comprises axially elongated hexaaqua-coordinated octahedral CuIIions located on an inversion centre, non-coordinating sulfate anions, 2-aminopyridinium cations and lattice water molecules. The crystal structure is built of successive inorganic and organic layers extending parallel to (001) that are connected by an extensive three-dimensional hydrogen-bonded network of the type O—H...O and N—H...O, as well as π–π interactions [centroid–centroid distance 3.4140 (14) Å, offset 0.277 Å].

scholarly journals Crystal structure of 4,4′,4′′-(1,3,5-triazine-2,4,6-triyl)tripyridinium trichloride 2.5-hydrate

2015 ◽  
Vol 71 (11) ◽  
pp. o858-o859
Author(s):  
Bo-Kai Ling ◽  
Xiao-Long Feng ◽  
Yang Li ◽  
Tian-Gang Luan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Organic Cations ◽  
Water Molecules ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
Compound C ◽  
Centroid Distance

The asymmetric unit of the title compound, C18H15N63+·3Cl−·2.5H2O, contains two independent (1,3,5-triazine-2,4,6-triyl)tripyridinium cations. Both cations are approximately planar, the r.m.s. deviations of fitted non-H atoms being 0.045 and 0.051 Å. In the crystal, extensive O—H...Cl, O—H...O, N—H...Cl and N—H...O hydrogen bonds and weak C—H...Cl and C—H...O interactions link the organic cations, Cl−anions and water molecules into a three-dimensional supramolecular architecture. π–π stacking between the pyridine rings of adjacent cations is also observed, the centroid-to-centroid distance being 3.7578 (8) Å.

scholarly journals Crystal structure ofN-hydroxypicolinamide monohydrate

2016 ◽  
Vol 72 (2) ◽  
pp. 117-119 ◽  
Author(s):  
Inna S. Safyanova ◽  
Kateryna A. Ohui ◽  
Irina V. Omelchenko
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Pyridine Ring ◽  
Water Molecules ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Compound C ◽  
Centroid Distance

The crystal structure of the title compound, C6H6N2O2·H2O, consists ofN-hydroxypicolinamide and water molecules connected through O—H...O and N—H...N hydrogen bonds. The O—H...O interactions and π–π stacking interactions between the pyridine rings [centroid–centroid distance = 3.427 (1) Å] organize the components into columns extending along thebaxis and the N—H...N hydrogen bonds link these columns into a two-dimensional framework parallel to (100). TheN-hydroxypicolinamide molecule adopts a strongly flattened conformation and only the O—H group H atom deviates significantly from the molecule best plane. The dihedral angle between the hydroxamic group and the pyridine ring is 5.6 (2)°. The conformation about the hydroxamic group C—N bond isZand that about the C—C bond between the pyridine and hydroxamic groups isE.

scholarly journals Piperazinium hydrogenarsenate monohydrate

2007 ◽  
Vol 63 (3) ◽  
pp. m905-m907 ◽  
Author(s):  
Hazel S. Wilkinson ◽  
William T. A. Harrison
Keyword(s):  
Hydrogen Bonds ◽  
Water Molecule ◽  
Title Compound ◽  
Water Molecules ◽  
Asymmetric Unit ◽  
Compound C

In the title compound, C4H12N2 2+·HAsO4 2−·H2O, the component species interact by way of N—H...O and O—H...O hydrogen bonds, the latter leading to infinite sheets of HAsO4 2− anions and water molecules containing R 6 6(18) loops. The asymmetric unit contains one anion, one water molecule and half each of two centrosymmetric cations.

6,9-Dibromo-2a,10b-diphenyl-2a,5,10,10b-tetrahydro-2H,3H-2,3,4a,10a-tetraazabenzo[g]cyclopenta[cd]azulene-1,4-dione monohydrate

2006 ◽  
Vol 62 (5) ◽  
pp. o1754-o1755
Author(s):  
Neng-Fang She ◽  
Sheng-Li Hu ◽  
Hui-Zhen Guo ◽  
An-Xin Wu
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Water Molecule ◽  
Title Compound ◽  
Supramolecular Structure ◽  
Hydrogen Bond Donor ◽  
Hydrogen Bond Acceptor ◽  
Compound C ◽  
Bifurcated Hydrogen Bond

The title compound, C24H18Br2N4O2·H2O, forms a supramolecular structure via N—H...O, O—H...O and C—H...O hydrogen bonds. In the crystal structure, the water molecule serves as a bifurcated hydrogen-bond acceptor and as a hydrogen-bond donor.

scholarly journals Crystal structure of 2-benzylamino-4-p-tolyl-6,7-dihydro-5H-cyclopenta[b]pyridine-3-carbonitrile

2015 ◽  
Vol 71 (2) ◽  
pp. 192-194
Author(s):  
R. A. Nagalakshmi ◽  
J. Suresh ◽  
S. Maharani ◽  
R. Ranjith Kumar ◽  
P. L. Nilantha Lakshman
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Pyridine Ring ◽  
Three Dimensional ◽  
Π Interactions ◽  
Compound C ◽  
Centroid Distance ◽  
Cyclopentane Ring ◽  
Ring Motif

The title compound, C23H21N3, comprises a 2-amino-3-cyanopyridine ring fused with a cyclopentane ring. The later adopts an envelope conformation with the central methylene C atom as the flap. The benzyl and andp-tolyl rings are inclined to one another by 56.18 (15)°, and to the pyridine ring by 81.87 (14) and 47.60 (11)°, respectively. In the crystal, molecules are linked by pairs of N—H...Nnitrilehydrogen bonds, forming inversion dimers with anR22(12) ring motif. The dimers are linked by C—H...π and π–π interactions [centroid–centroid distance = 3.7211 (12) Å], forming a three-dimensional framework.

Sign in / Sign up

Export Citation Format

Share Document