4,4′-Bi(1H-pyrazol-2-ium) tetrachloridoaurate(III) chloride: a three-dimensional cationic cooperite-like framework with multiple pyrazolium–chloride hydrogen-bonding interactions

2012 ◽  
Vol 68 (7) ◽  
pp. m169-m172 ◽  
Author(s):  
Konstantin V. Domasevitch

In the title compound, (C6H8N4)[AuCl4]Cl, the 4,4′-bi(1H-pyrazol-2-ium) dication, denoted [H2bpz]2+, is situated across a centre of inversion, the [AuCl4]−anion lies across a twofold axis passing through Cl—Au—Cl, and the Cl−anion resides on a twofold axis. Conventional N—H...Cl hydrogen bonding [N...Cl = 3.109 (3) and 3.127 (3) Å, and N—H...Cl = 151 and 155°] between [H2bpz]2+cations (square-planar node) and chloride anions (tetrahedral node), as complementary donors and acceptors of four hydrogen bonds, leads to a three-dimensional binodal four-connected framework with cooperite topology (three-letter notation pts). The framework contains channels along thecaxis housing one-dimensional stacks of square-planar [AuCl4]−anions [Au—Cl = 2.2895 (10)–2.2903 (16) Å; interanion Au...Cl contact = 3.489 (2) Å], which are excluded from primary hydrogen bonding with the [H2bpz]2+tectons.

2007 ◽  
Vol 63 (11) ◽  
pp. o4242-o4242
Author(s):  
Haibo Yu ◽  
Bingnan Zhang ◽  
Jianxin Fang

In the crystal structure of the title compound, C12H14N4O3, the dihedral angle between the phenyl and imidazole rings is 76.55 (7)°. The nitrite O atoms of the (E)-2-nitriminoimidazolidin-1-yl group act as the acceptors of three N—H...O hydrogen bonds from the N atom of the imidazole ring, resulting in a one-dimensional chain. C—H...O hydrogen-bonding interactions are also observed in this complex, extending the structure into a two-dimensional supramolecular sheet.


2006 ◽  
Vol 62 (5) ◽  
pp. m1004-m1005 ◽  
Author(s):  
Shuang-Quan Zang ◽  
Yang Su ◽  
Ruo-Jie Tao

The title compound, (C13H10BrN2)[Ni(C3S5)2]·C3H6O, is a new ionic complex in which the NiIII atom exhibits a square-planar coordination involving four S atoms from two 2-thioxo-1,3-dithiole-4,5-dithiolate (dmit) ligands. In the crystal structure, weak S...S and hydrogen-bonding interactions form a three-dimensional supramolecular network.


2014 ◽  
Vol 70 (3) ◽  
pp. o279-o280
Author(s):  
R. A. Nagalakshmi ◽  
J. Suresh ◽  
R. Ranjith Kumar ◽  
V. Jeyachandran ◽  
P. L. Nilantha Lakshman

The asymmetric unit of the title compound, C19H16N2O5S, contains four independent molecules (A,B,CandD), with two molecules (BandD) displaying disorder in their methylsulfanyl groups [occupancy ratios of 0.797 (11):0.203 (11) and 0.85 (2):0.15 (2)]. The nitro groups are twisted slightly out of the planes of the 2-pyrroline rings to which they are bonded with dihedral angles of 10.17 (1), 8.01 (1), 9.44 (1) and 8.87 (1)° in moleculesA,B,CandD, respectively. The 2-pyrroline rings are almost orthogonal to the attached tolyl rings, forming dihedral angles of 73.44 (1), 81.21 (1), 88.18 (8) and 73.94 (1)° for moleculesA,B,CandD, respectively. A weak intramolecular O—H...O interaction is observed in moleculesBandC. The two hydroxy groups in each molecule are involved in intermolecular O—H...O hydrogen bonding. In the crystal, molecules are connectedviaO—H...O and C—H...O hydrogen bonds, forming a complex three-dimensional network.


IUCrData ◽  
2016 ◽  
Vol 1 (9) ◽  
Author(s):  
Maciej Posel ◽  
Helen Stoeckli-Evans

The title compound, C14H12N4, has approximate twofold rotational symmetry. The pseudo-twofold axis bisects the C—C bonds of the dihydropyrazine ring, which has a screw–boat conformation. The two pyridine rings are inclined to the mean plane of the dihydropyrazine ring by 30.78 (11) and 39.37 (9)°, and to one another by 62.53 (10)°. The pyridine N atoms arecisto one another, with an N...N nonbonded distance of 3.101 (2) Å. In the crystal, molecules are linkedviaa pair of N—H...N hydrogen bonds, forming inversion dimers with anR22(6) ring motif. These units are linked by further N—H...H hydrogen bonds, forming layers parallel to (302). The layers are linked by C—H...π interactions, forming a three-dimensional framework.


IUCrData ◽  
2021 ◽  
Vol 6 (6) ◽  
Author(s):  
Selma Khelfa ◽  
Marwa Touil ◽  
Zouaoui Setifi ◽  
Fatima Setifi ◽  
Mohammed Hadi Al-Douh ◽  
...  

In the title compound, [CdNi(C9H8N2)2(CN)4] n , the Cd and Ni atoms both lie on centres of inversion in space group P21/c. The Cd atom is coordinated by two bidentate quinolin-8-amine ligands and by the N atoms of two cyano ligands, while the square planar Ni atom is coordinated by the C atoms of four cyano ligands. These units form a one-dimensional coordination polymer containing an (–NC—Ni—CN—Cd–) n backbone, and the coordination polymer chains are linked into a three-dimensional array by a combination of N—H...N and C—H...N hydrogen bonds, augmented by a π–π stacking interaction.


2006 ◽  
Vol 62 (7) ◽  
pp. o2807-o2808
Author(s):  
Hao Shi

The structure of the title compound, C10H16NO2 +·Cl−·2H2O, has been redetermined. It is stabilized by O—H...Cl, O—H...O, N—H...O and N—H...Cl hydrogen-bonding interactions, which build up an intricate three-dimensional network.


2007 ◽  
Vol 63 (3) ◽  
pp. o1160-o1161 ◽  
Author(s):  
Jian-Gang Wang ◽  
Fang-Fang Jian ◽  
Xiao-Yan Ren ◽  
Shi-Hong Kan

The title compound, C9H10CIN3S, was prepared by the reaction of thiosemicarbazide with 1-(2-chlorophenyl)ethanone at room temperature. The packing is stabilized by hydrogen bonds. In the crystal structure, molecules are linked into two-dimensional layers by intermolecular N—H...S hydrogen-bonding interactions.


Author(s):  
Cong Nguyen Tien ◽  
Quang Nguyen Tan ◽  
Dung Pham Duc ◽  
Phuong Tran Hoang ◽  
Dat Nguyen Dang ◽  
...  

The title compound, C18H16N2O3S, was synthesized by reaction of 2-mercapto-3-phenylquinazolin-4(3H)-one with ethyl chloroacetate. The quinazoline ring forms a dihedral angle of 86.83 (5)° with the phenyl ring. The terminal methyl group is disordered by a rotation of about 60° in a 0.531 (13): 0.469 (13) ratio. In the crystal, C—H...O hydrogen-bonding interactions result in the formation of columns running in the [010] direction. Two parallel columns further interact by C—H...O hydrogen bonds. The most important contributions to the surface contacts are from H...H (48.4%), C...H/H...C (21.5%) and O...H/H...O (18.7%) interactions, as concluded from a Hirshfeld analysis.


2013 ◽  
Vol 69 (11) ◽  
pp. m570-m571 ◽  
Author(s):  
Kelvin B. Chang ◽  
Matthew D. Smith ◽  
Matthias Zeller ◽  
Alexander J. Norquist

The title compound, {(C6H21N4)[V3O9]·H2O}n, crystallizes as a salt with [trenH3]3+cations [tren is tris(2-aminoethyl)amine], and one-dimensional anionic {[VVO3]−}n(metavanadate) chains along thec-axis direction. Three crystallographically distinct VVsites and one occluded water molecule are present for every [trenH3]3+cation in the unit cell. The {[VVO3]−}nchains are composed of vertex-sharing [VO4] tetrahedra and have a repeat unit of six tetrahedra. Each tetrahedron in the chain contains two terminal and two μ2-bridging oxide ligands. The [trenH3]3+cations, {[VVO3]−}nanions and occluded water molecules participate in an extensive three-dimensonal hydrogen-bonding network. The three terminal ammonium sites of the [trenH3]3+cations each form strong N—H...O hydrogen bonds to terminal oxide ligands on the {[VVO3]−}nchain. Each occluded water molecule also donates two O—H...O hydrogen bonds to the terminal oxide ligands.


2009 ◽  
Vol 65 (6) ◽  
pp. o1428-o1428 ◽  
Author(s):  
Li-Hua Mao ◽  
Yan Chen

In the crystal structure of the title compound, C5H3IN2O2, intermolecular C—H...N hydrogen-bonding interactions link the molecules into one-dimensional chains along thebaxis.


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