Distinct chiral units from an axially prochiral ligand in a photoluminescent zinc(II)–organic complex

2012 ◽  
Vol 68 (4) ◽  
pp. m90-m93 ◽  
Author(s):  
Ming-Xing Zhang ◽  
Xin Chen ◽  
Kun-Lin Huang ◽  
Yi Zhu ◽  
Shan-Shan Yang
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Helical Chain ◽  
Supramolecular Architecture ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Organic Complex ◽  
One Dimensional ◽  
Left Handed ◽  
The Right

The asymmetric unit of the title compound, poly[(dimethylamine-κN)[μ3-(E)-2,6-dimethyl-4-styrylpyridine-3,5-dicarboxylato-κ3O3:O3′:O5]zinc(II)], [Zn(C17H13NO4)(C2H7N)]n, consists of one crystallographically independent distorted tetrahedral ZnIIcation, one (E)-2,6-dimethyl-4-styrylpyridine-3,5-dicarboxylate (mspda2−) ligand and one coordinated dimethylamine molecule. TwoS- andR-type chiral units are generated from the axially prochiral mspda2−ligand through C—H...O hydrogen bonds. TheR-type chiral units assemble a left-handed (M) Zn–mspda helical chain, while the right-handed (P) Zn–mspda helical chain is constructed from neighbouringS-type chiral units. TheP- andM-type helical chains are interlinked by carboxylate O atoms to form a one-dimensional ladder. Interchain N—H...O hydrogen bonds extend these one-dimensional ladders into a two-dimensional supramolecular architecture. The title compound exhibits luminescence at λmax= 432 nm upon excitation at 365 nm.

scholarly journals Diaqua(5,10,15,20-tetraphenylporphyrinato-κ4N)magnesium–18-crown-6 (1/1)

2013 ◽  
Vol 69 (2) ◽  
pp. m114-m115 ◽  
Author(s):  
Khaireddine Ezzayani ◽  
Soumaya Nasri ◽  
Mohamed Salah Belkhiria ◽  
Jean-Claude Daran ◽  
Habib Nasri
Keyword(s):  
Hydrogen Bonds ◽  
Bond Length ◽  
Title Compound ◽  
Supramolecular Structure ◽  
Crystal Packing ◽  
Water Molecules ◽  
Supramolecular Architecture ◽  
Inversion Center ◽  
Asymmetric Unit ◽  
One Dimensional

In the title compound, [Mg(C44H28N4)(H2O)2]·C12H24O6, the MgIIcation lies on an inversion center and is octahedrally coordinated by the four N atoms of the deprotonated tetraphenylporphyrin (TPP) ligand and by two water molecules. The asymmetric unit contains one half of the [Mg(TPP)(H2O)2] complex and one half of an 18-crown-6 molecule. The average equatorial magnesium–pyrrole N atom distance (Mg—Np) is 2.071 (1) Å and the axial Mg—O(H2O) bond length is 2.213 (1) Å. The crystal packing is stabilized by two O—H...O hydrogen bonds between coordinating water molecules and adjacent 18-crown-6 molecules, and exhibits a one-dimensional supramolecular structure along theaaxis. The supramolecular architecture is futher stabilized by weak C—H...π interactions. The 18-crown-6 molecule is disordered over two sets of sites with an occupancy ratio of 0.8:0.2.

1,1′-(2,5-Dimethyl-1,4-phenylenemethylene)di-1H-imidazole dihydrate

2006 ◽  
Vol 62 (5) ◽  
pp. o1733-o1734
Author(s):  
Wen-Hua Wang ◽  
Wei Dou ◽  
Zhong-Lu You ◽  
Wei-Sheng Liu ◽  
Da-Qi Wang
Keyword(s):  
Hydrogen Bonds ◽  
Water Molecule ◽  
Title Compound ◽  
Organic Molecule ◽  
Organic Molecules ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Compound C ◽  
Chain Links

In the title compound, C16H18N4·2H2O, there is one half-molecule (organic) and one water molecule in the asymmetric unit, the organic molecule being centrosymmetric. The separation of the two terminal N atoms is 11.296 (8) Å and the dihedral angle between the benzene and imidazole rings is 85.27 (18)°; the molecule adopts a Z-shaped conformation. A one-dimensional water chain links the organic molecules, forming a two-dimensional ladder-shaped network along the b-axis direction through intermolecular O—H...O and N—H...O hydrogen bonds.

scholarly journals 4-Iodo-N-(o-tolylsulfonyl)benzamide

IUCrData ◽  
2017 ◽  
Vol 2 (1) ◽  
Author(s):  
S. Naveen ◽  
E. Suresha ◽  
A. G. Sudha ◽  
N. K. Lokanath ◽  
P. A. Suchetan ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Dihedral Angle ◽  
Title Compound ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Compound C ◽  
Independent Molecules ◽  
Ring Motif

The title compound, C14H12INO3S, crystallizes with two independent molecules (AandB) in the asymmetric unit. The dihedral angle between the two aryl rings is 83.1 (4)° in moleculeAand 79.8 (4)° in moleculeB. In the crystal, the two molecules are linked by a pair of N—H...O hydrogen bonds, forming anA–Bdimer with anR22(8) ring motif. The dimer is further strengthened by a pair of C—H...O hydrogen bonds with anR22(14) motif. Another pair of C—H...O interactions assembles these dimers along the diagonal of thebcplane, forming ribbons. Adjacent ribbons are connected by C—H...πarylinteractions between theAmolecules, and thus the overall supramolecular architecture is one-dimensional.

The supramolecular architecture of tris(naphthalene-1,5-diaminium) bis(5-aminonaphthalen-1-aminium) octakis[hydrogen (5-carboxypyridin-3-yl)phosphonate]

2012 ◽  
Vol 68 (9) ◽  
pp. o351-o354 ◽  
Author(s):  
Magdalena Wilk ◽  
Jan Janczak ◽  
Veneta Videnova-Adrabinska
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Inversion Symmetry ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Multiple Hydrogen Bonds ◽  
Hydrogen Bonded

The asymmetric unit of the title compound, 3C10H12N22+·2C10H11N2+·8C6H5NO5P−, contains one and a half naphthalene-1,5-diaminium cations, in which the half-molecule has inversion symmetry, one 5-aminonaphthalen-1-aminium cation and four hydrogen (5-carboxypyridin-3-yl)phosphonate anions. The crystal structure is layered and consists of hydrogen-bonded anionic monolayers between which the cations are arranged. The acid monoanions are organized into one-dimensional chains along the [101] directionviahydrogen bonds established between the phosphonate sites. (C)O—H...Npyhydrogen bonds (py is pyridine) crosslink the chains to form an undulating (010) monolayer. The cations serve both to balance the charge of the anionic network and to connect neighbouring layersviamultiple hydrogen bonds to form a three-dimensional supramolecular architecture.

Ethylammonium saccharinate

2006 ◽  
Vol 62 (5) ◽  
pp. o1800-o1801
Author(s):  
Zi-Liang Wang ◽  
Lin-Heng Wei ◽  
Ming-Xue Li ◽  
Jing-Ping Wang
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Two Dimensional ◽  
Asymmetric Unit ◽  
Framework Structure ◽  
Compound C

The asymmetric unit of the title compound, C2H8N+·C7H4NO3S−, contains a saccharinate anion and a protonated ethylamine cation. Intermolecular N—H...O hydrogen bonds link these ions into a two-dimensional framework structure. The crystal packing is further stabilized by weak intermolecular C—H...O hydrogen bonds

scholarly journals Crystal structure ofN,N′-dibenzyl-3,3′-dimethoxybenzidine

2018 ◽  
Vol 74 (3) ◽  
pp. 271-274
Author(s):  
Hansu Im ◽  
Jineun Kim ◽  
Changeun Sim ◽  
Tae Ho Kim
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Schiff Base ◽  
Hydrogen Bonds ◽  
Dft Calculations ◽  
Title Compound ◽  
Condensation Reaction ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Acidic Conditions

The title compound, (systematic name:N,N′-dibenzyl-3,3′-dimethoxy-1,1′-biphenyl-4,4′-diamine), C28H28N2O2, was synthesized by the reduction of a Schiff base preparedviaa condensation reaction betweeno-dianisidine and benzaldehyde under acidic conditions. The molecule lies on a crystallographic inversion centre so that the asymmetric unit contains one half-molecule. The biphenyl moiety compound is essentially planar. Two intramolecular N—H...O hydrogen bonds occur. The dihedral angle between the terminal phenyl and phenylene rings of a benzidine unit is 48.68 (6)°. The methylene C atom of the benzyl group is disordered over two sets of sites, with occupancy ratio 0.779 (18):0.221 (18). In the crystal, molecules are connected by hydrogen bonding betweeno-dianisidine O atoms and H atoms of the terminal benzyl groups, forming a one-dimensional ladder-like structure. In the data from DFT calculations, the central biphenyl showed a twisted conformation.

2,5-Dibromopyridinium hexabromidostannate(IV)

2007 ◽  
Vol 63 (3) ◽  
pp. m892-m894 ◽  
Author(s):  
Basem Fares Ali ◽  
Rawhi Al-Far
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Rotation Axis ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
Intermolecular Hydrogen Bonds ◽  
Compound C ◽  
Distorted Octahedral

The asymmetric unit of the title compound, (C5H4Br2N)2[SnBr6], contains one cation and one half-anion. The anion exhibits a distorted octahedral arrangement about the Sn atom, which lies on a crystallographic twofold rotation axis. In the crystal structure, intermolecular hydrogen bonds and short Br...Br interactions cause the formation of a supramolecular architecture, in which they may be effective in the stabilization of the structure.

scholarly journals Diaquabis[2,6-bis(4H-1,2,4-triazol-4-yl)pyridine-κN2]bis(selenocyanato-κN)cobalt(II)

2012 ◽  
Vol 68 (8) ◽  
pp. m1097-m1098
Author(s):  
Yuan-Yuan Liu ◽  
Pan Yang
Keyword(s):  
Hydrogen Bonds ◽  
Water Molecule ◽  
Title Compound ◽  
Three Dimensional ◽  
Water Molecules ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
Pyridine Ligand ◽  
Complex Molecules ◽  
Pyridine Ligands

In the title compound, [Co(NCSe)2(C9H7N7)2(H2O)2], the Co2+cation is coordinated by two selenocyanate anions, two 2,6-bis(4H-1,2,4-triazol-4-yl)pyridine ligands and two water molecules within a slightly distorted N4O2octahedron. The asymmetric unit consists of one Co2+cation, which is located on a center of inversion, as well as one selenocyanate anion, one 2,6-bis(4H-1,2,4-triazol-4-yl)pyridine ligand and one water molecule in general positions. Intermolecular O—H...N hydrogen bonds join the complex molecules into layers parallel to thebcplane. The layers are linked by C—H...N and C—H...Se hydrogen bonds into a three-dimensional supramolecular architecture.

scholarly journals Methyl 6-O-trityl-α-D-glucopyranoside methanol disolvate

2014 ◽  
Vol 70 (4) ◽  
pp. o492-o493
Author(s):  
Zeynep Gültekin ◽  
Mehmet Civan ◽  
Wolfgang Frey ◽  
Tuncer Hökelek
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Supramolecular Architecture ◽  
Asymmetric Unit ◽  
Compound C ◽  
Solvent Molecules

The asymmetric unit of the title compound, C26H28O6·2CH3OH, contains two independent methyl 6-O-trityl-α-D-glucopyranoside molecules and four methanol solvent molecules. The rings of two methyl α-D-glucopyranoside adopt chair conformations. In the crystal, extensive intra- and intermolecular O—H...O and C—H...O hydrogen bonds link the molecules into a three-dimensional supramolecular architecture.

9-(Methoxymethyl)anthracene

2007 ◽  
Vol 63 (11) ◽  
pp. o4442-o4442 ◽  
Author(s):  
Jie Liu ◽  
Guo-Hua Wei ◽  
Guang-Ju Ping ◽  
Jian-Fang Ma
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Mirror Plane ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Compound C ◽  
Independent Molecules

The title compound, C16H14O, crystallizes with two independent molecules in the asymmetric unit, one of which lies on a crystallographic mirror plane. Intermolecular C—H...O hydrogen bonds link the molecules into infinite one-dimensional chains.

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