A unique hydrogen bonding network in the crystal structure of 3a,6a-diphenylglycoluril

CrystEngComm ◽  
2003 ◽  
Vol 5 (79) ◽  
pp. 451-453 ◽  
Author(s):  
Kwangyul Moon ◽  
Wei-Zhong Chen ◽  
Tong Ren ◽  
Angel E. Kaifer
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonding Network

The crystal structure of Ni-rich gordaite–thérèsemagnanite from Cap Garonne, France

2019 ◽  
Vol 83 (03) ◽  
pp. 459-463 ◽  
Author(s):  
Stuart J. Mills ◽  
Owen P. Missen ◽  
Georges Favreau
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Layered Structure ◽  
Mineral Species ◽  
The North ◽  
Hydrogen Bonding Network

AbstractThe crystal structure of Ni-rich gordaite–thérèsemagnanite has been determined from a sample collected at pillar 80 in the North mine, Cap Garonne, Var, France. The structure was refined to R1 = 0.0693 for 935 reflections with I > 2σ(I). The mineral is isostructural with gordaite, forming a layered structure with an extensive hydrogen-bonding network. The possible polytypic relationship between gordaite, thérèsemagnanite and guarinoite is also discussed. The guarinoite formula (Zn,Co,Ni)6(SO4)(OH,Cl)10·5H2O is also likely to be incorrect and is more likely to be Na(Zn,Co)4(SO4)(OH)6Cl·5–6H2O, meaning that guarinoite is equivalent to Co-rich gordaite-2H and would not be a distinct mineral species.

scholarly journals Crystal structure of pentakis(ethylenediamine-κ2N,N′)lanthanum(III) trichloride–ethylenediamine–dichloromethane (1/1/1)

2014 ◽  
Vol 70 (11) ◽  
pp. 424-426 ◽  
Author(s):  
Hope T. Sartain ◽  
Richard J. Staples ◽  
Shannon M. Biros
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Electron Density ◽  
Inversion Center ◽  
Asymmetric Unit ◽  
Acta Cryst ◽  
Bypass Procedure ◽  
Hydrogen Bonding Network ◽  
Additional Hydrogen

We report here the crystal structure of a ten-coordinate lanthanum(III) metal coordinated by five bidentate ethylenediamine ligands, [La(C2H8N2)5]Cl3·C2H8N2·CH2Cl2. One free ethylenediamine molecule and three Cl−anions are also located in the asymmetric unit. The overall structure is held together by an extensive hydrogen-bonding network between the Cl−anions and the NH groups on the metal-bound ethylenediamine ligands. The free ethylenediamine molecule is held in an ordered position by additional hydrogen bonds involving both the chlorides and –NH groups on the metal-bound ligands. One highly disordered molecule of dichloromethane is located on an inversion center; however, all attempts to model this disorder were unsuccessful. The electron density in this space was removed using the BYPASS procedure [van der Sluis & Spek (1990).Acta Cryst.A46, 194–201].

First bent form for the hydroxo-bridged cis-diammineplatinum(II) dimer [Pt2(NH3)4(μ-OH)2](ClO4)2

2004 ◽  
Vol 60 (3) ◽  
pp. 255-262 ◽  
Author(s):  
Ken Sakai ◽  
Yosuke Konno ◽  
Noboru Takayama ◽  
Satoru Takahashi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Planar Geometry ◽  
One Dimensional ◽  
The Third ◽  
Geometrical Features ◽  
Hydrogen Bonding Network ◽  
The One ◽  
Carbonate Salts ◽  
Perchlorate Salt

The third crystal structure containing the hydroxo-bridged cis-diammineplatinum(II) dimer has been determined for a perchlorate salt of the complex, [Pt2(NH3)4(μ-OH)2](ClO4)2. However, the dinuclear cations in the nitrate and the carbonate salts, [Pt2(NH3)4(μ-OH)2](NO3)2 [Faggiani, Lippert, Lock & Rosenberg (1977). J. Am. Chem. Soc. 99, 777–781] and [Pt2(NH3)4(μ-OH)2](CO3)·H2O [Lippert, Lock, Rosenberg & Zvagulis (1978). Inorg. Chem. 17, 2971−2975], were reported to possess a nearly planar geometry. The cation in the title perchlorate salt has been found to possess an exceptional bent form in which two Pt coordination planes within the dimer are tilted at an angle of 151.7 (1)° to one another. The diplatinum entity has a syn orientation with regard to the conformation of two hydroxo bridges, in part due to the one-dimensional hydrogen-bonding network achieved in the crystal structure. DFT MO investigations have also been carried out to reveal that the planar-bent selection could be induced by the anti–syn selection at the H(hydroxo) atoms. Comparison has also been made between the geometrical features of the three salts from the viewpoint of the orientation of H(hydroxo) atoms.

scholarly journals Crystal structure refinements of legrandite, adamite, and paradamite: The complex structure and characteristic hydrogen bonding network of legrandite

2016 ◽  
Vol 111 (1) ◽  
pp. 35-43 ◽  
Author(s):  
Satoshi JINNOUCHI ◽  
Akira YOSHIASA ◽  
Kazumasa SUGIYAMA ◽  
Reiko SHIMURA ◽  
Hiroshi ARIMA ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Complex Structure ◽  
Hydrogen Bonding Network

Bis(adeninium) chloranilate dihydrate

2007 ◽  
Vol 63 (11) ◽  
pp. o4433-o4433 ◽  
Author(s):  
Kazuma Gotoh ◽  
Rie Ishikawa ◽  
Hiroyuki Ishida
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Three Dimensional ◽  
Water Molecules ◽  
Hydrogen Bonding Network

In the crystal structure of the title compound, 2C5H6N5 +·C6Cl2O4 2−·2H2O, two adeninium cations, one chloranilate dianion and two water molecules are held together by O—H...O, N—H...O, O—H...Cl and C—H...O hydrogen bonds, forming a centrosymmetric unit. The chloranilate dianion resides on an inversion centre. The anion and two cations are approximately coplanar, the dihedral angle between the planes of the adeninium cation and the chloranilate dianion being 3.25 (3)°. The crystal structure is stabilized by inter-unit N—H...N, N—H...O, N—H...Cl and O—H...N hydrogen bonds, forming a three-dimensional hydrogen-bonding network.

The crystal structure of mawbyite, PbFe2(AsO4)2(OH)2

1997 ◽  
Vol 61 (408) ◽  
pp. 685-691 ◽  
Author(s):  
Kharisun ◽  
M. R. Taylor ◽  
D. J. M. Bevan ◽  
A. D. Rae ◽  
A. Pring
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Bond Valence ◽  
Hydrogen Bonding Network ◽  
The Relationship

AbstractThe crystal structure of mawbyite, PbFe2(AsO4)2(OH)2 has been refined. The mineral is monoclinic, C2/m with a = 9.066(4), b = 6.286(3) c = 7.564(3) Å, β = 114.857(5)°, Z = 2; the structure has been refined to a conventional R = 4.3% using 361 observed reflections [I> 3σ(I)]. The structure contains chains of edgesharing Fe(O,OH)6 octahedra which are linked by AsO4 tetrahedra and Pb atoms in distorted square antiprismatic co-ordination. The hydrogen bonding network in the structure has been modelled using bond valence calculations. Mawbyite is confirmed to be isostructural with tsumcorite and dimorphous with carminite and the relationship between these two structures is discussed.

3,3′-(4-Amino-4H-1,2,4-triazole-3,5-diyl)dibenzoic acid

2006 ◽  
Vol 62 (7) ◽  
pp. o2791-o2792 ◽  
Author(s):  
Peng Wang ◽  
Jian Ping Ma ◽  
Ru-Qi Huang ◽  
Yu-Bin Dong
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Title Compound ◽  
Intermolecular Hydrogen Bonding ◽  
Compound C ◽  
Hydrogen Bonding Network

The title compound, C16H12N4O4, has a non-planar molecular structure. An intermolecular hydrogen-bonding network helps to stabilize the crystal structure.

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