Crystal-to-crystal transformation from a chain polymer to a two-dimensional network by thermal desolvation

2008 ◽  
pp. 3402 ◽  
Author(s):  
Alireza Aslani ◽  
Ali Morsali
Keyword(s):  
Two Dimensional ◽  
Chain Polymer ◽  
Crystal Transformation ◽  
Dimensional Network ◽  
A Chain

Structural interconversion between a chain polymer and a two-dimensional network accompanied by tunable magnetic properties

2011 ◽  
Vol 47 (23) ◽  
pp. 6683 ◽  
Author(s):  
Chao Chen ◽  
Jian-Ke Sun ◽  
Wei Li ◽  
Chang-Neng Chen ◽  
Jie Zhang
Keyword(s):  
Magnetic Properties ◽  
Two Dimensional ◽  
Chain Polymer ◽  
Dimensional Network ◽  
A Chain

scholarly journals Synthesis and crystal structures of a bis(3-hydroxy-cyclohex-2-en-1-one) and two hexahydroquinoline derivatives

2020 ◽  
Vol 76 (2) ◽  
pp. 125-131
Author(s):  
Scott A. Steiger ◽  
Chun Li ◽  
Christina Gates ◽  
Nicholas R. Natale
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Crystal Packing ◽  
Structural Features ◽  
Boat Conformation ◽  
Two Dimensional ◽  
Aryl Group ◽  
Dimensional Network ◽  
A Chain ◽  
Intramolecular Hydrogen

The title compound I, 2,2′-[(2-nitrophenyl)methylene]bis(3-hydroxy-5,5-dimethylcyclohex-2-enone), C23H27NO6, features a 1,3-ketone–enol conformation which is stabilized by two intramolecular hydrogen bonds. The most prominent intermolecular interactions in compound I are C—H...O hydrogen bonds, which link molecules into a two-dimensional network parallel to the (001) plane and a chain perpendicular to (1\overline{1}1). Both title compounds II, ethyl 4-(4-hydroxy-3,5-dimethoxyphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C23H29NO6, and III, ethyl 4-(anthracen-9-yl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C29H29NO3, share the same structural features, such as a shallow boat conformation of the dihydropyridine group and an orthogonal aryl group attached to the dihydropyridine. Intermolecular N—H...O bonding is present in the crystal packing of both compound II and III.

scholarly journals catena-Poly[[diaquabis(1H-imidazole-κN3)cobalt(II)]-μ-2,3,5,6-tetrachloroterephthalato-κ2O1:O4]

2012 ◽  
Vol 68 (4) ◽  
pp. m368-m368
Author(s):  
Chang-Ge Zheng ◽  
Peng Zhang ◽  
Ping Li ◽  
Pei-Pei Zhang
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Water Molecules ◽  
Coordination Geometry ◽  
Two Dimensional ◽  
Distorted Octahedral Coordination ◽  
Dimensional Network ◽  
Distorted Octahedral Coordination Geometry ◽  
Distorted Octahedral ◽  
A Chain

In the title compound, [Co(C8Cl4O4)(C3H4N2)2(H2O)2]n, the CoIIion displays a distorted octahedral coordination geometry with two O atoms from two monodentate tetrachloroterephthalate dianions, two N atoms from two imidazole molecules and two O atoms from two water molecules. The CoIIions are connectedviathe tetrachloroterephthalate dianions into a chain running along the crystallographic [110] direction. Adjacent chains are linked into a two-dimensional network arranged parallel to (010) by classical N—H...O and O—H...O hydrogen bonds.

scholarly journals Synthesis and crystal structure of a two-dimensional CoIIcoordination polymer: poly[(μ3-3-carboxybenzoato)[μ2-5-(pyridin-4-yl)-1H,2′H-3,3′-bi[1,2,4-triazole]]cobalt(II)]

2017 ◽  
Vol 73 (11) ◽  
pp. 1779-1781
Author(s):  
Chao-Jun Du ◽  
Xiao-Na Zhao ◽  
Bao-Yong Chen
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Three Dimensional ◽  
The Other ◽  
Two Dimensional ◽  
Coordination Environment ◽  
Synthesis And Crystal Structure ◽  
Carboxylate Groups ◽  
Dimensional Network ◽  
A Chain

In the title compound, [Co(C8H5O4)(C9H6N7)]n, the divalent CoIIatom is six-coordinated to three N atoms from two symmetrical 5-(pyridin-4-yl)-1H,2′H-3,3′-bi[1,2,4-triazole] (H2pyttz) ligands and three O atoms from three symmetrical 3-carboxybenzoate (Hbdic) ligands, leading to a distorted {CoN3O3} octahedral coordination environment. Two CoIIcations are linked by four bridging carboxylate groups to generate a dinuclear [Co2(CO2)4] unit. The dinuclear units are further connected into a chain along [010]viathe Hbdic ligands. The other infinite chain, along [100], is formed through the H2pyttz ligands. Finally, the two kinds of chains are cross-linked, by sharing the CoIIcations, into a two-dimensional network. In the crystal, adjacent layers are further linked by O—H...N hydrogen bonds into a three-dimensional framework.

UV-induced single-crystal-to-single-crystal conversion from a coordination ladder to a two-dimensional network through an intermolecular carbon–carbon coupling reaction

2017 ◽  
Vol 46 (30) ◽  
pp. 9755-9759 ◽  
Author(s):  
Jing-Min Chen ◽  
Yi-Xuan Hou ◽  
Qian-Kun Zhou ◽  
Hao Zhang ◽  
Dong Liu
Keyword(s):  
Single Crystal ◽  
Coupling Reaction ◽  
Two Dimensional ◽  
Crystal Transformation ◽  
Dimensional Network

UV-induced single-crystal-to-single-crystal transformation from a coordination ladder to a two-dimensional network accompanied by photocontrolled fluorescence.

Trichlorido(N,N-dimethylformamide-κO)bis(1,10-phenanthroline-κ2 N,N′)lanthanum(III) N,N-dimethylformamide disolvate

2007 ◽  
Vol 63 (11) ◽  
pp. m2637-m2638 ◽  
Author(s):  
Li-Ming Zhou ◽  
Guang-Hui Sun ◽  
Li-Jun Gao ◽  
Shao-Ming Fang ◽  
Wei-Dong Yan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Stacking Interactions ◽  
Two Dimensional ◽  
Π Stacking ◽  
Dimensional Network ◽  
A Chain ◽  
Phenanthroline Ligands

In the title compound, [LaCl3(C12H8N2)2(C3H7NO)]·2C3H7NO, the LaIII ion is eight-coordinated by four N donors from two 1,10-phenanthroline ligands, one O atom from one N,N-dimethylformamide molecule and three chloride anions. In the crystal structure, the LaIII mononuclear units are linked to form a chain along the a axis by weak C—H...Cl hydrogen bonds. The chains are crosslinked to form a two-dimensional network parallel to the ab plane by π–π stacking interactions between the phen rings [centroid–centroid seperations range from 3.589 (2) to 3.708 (2) Å].

ENCRYPTION-DECRYPTION TECHNIQUES FOR PICTURES

1989 ◽  
Vol 03 (03n04) ◽  
pp. 497-503
Author(s):  
RANI SIROMONEY ◽  
K. G. SUBRAMANIAN ◽  
P. J. ABISHA
Keyword(s):  
Public Key ◽  
Two Dimensional ◽  
Chain Code ◽  
Dimensional Array ◽  
Public Key Cryptosystems ◽  
Encryption Decryption ◽  
A Chain

Language theoretic public key cryptosystems for strings and pictures are discussed. Two methods of constructing public key cryptosystems for the safe transmission or storage of chain code pictures are presented; the first one encrypts a chain code picture as a string and the second one as a two-dimensional array.

scholarly journals Crystal structure of 2-nitro-N-(5-nitro-1,3-thiazol-2-yl)benzamide

2014 ◽  
Vol 70 (12) ◽  
pp. o1252-o1252 ◽  
Author(s):  
Rodolfo Moreno-Fuquen ◽  
Diego F. Sánchez ◽  
Javier Ellena
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Dihedral Angles ◽  
Two Dimensional ◽  
Compound C ◽  
Dimensional Network ◽  
Benzene Rings ◽  
The Mean ◽  
Amide Fragment

In the title compound, C10H6N4O5S, the mean plane of the non-H atoms of the central amide fragment C—N—C(=O)—C [r.m.s. deviation = 0.0294 Å] forms dihedral angles of 12.48 (7) and 46.66 (9)° with the planes of the thiazole and benzene rings, respectively. In the crystal, molecules are linked by N—H...O hydrogen bonds, forming chains along [001]. In addition, weak C—H...O hydrogen bonds link these chains, forming a two-dimensional network, containingR44(28) ring motifs parallel to (100).

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