Interplay of hydrogen bonding and aromatic ring interactions in supramolecular complexes of phenazine with N,N′-bis(2-pyridyl)aryldiamines

CrystEngComm ◽  
2005 ◽  
Vol 7 (71) ◽  
pp. 433 ◽  
Author(s):  
Maria Gdaniec ◽  
Igor Bensemann ◽  
Tadeusz Połoński
Keyword(s):  
Hydrogen Bonding ◽  
Aromatic Ring ◽  
Supramolecular Complexes ◽  
Aromatic Ring Interactions

Self-assembly of supramolecular complexes based on hydrogen bonding

1998 ◽  
Vol 5 (5-6) ◽  
pp. 627-629 ◽  
Author(s):  
Haipeng Zheng ◽  
Ruifeng Zhang ◽  
Jiacong Shen
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Supramolecular Complexes

Hydrogen bonding interactions affect the hierarchical self-assembly and secondary structures of comb-like polypeptide supramolecular complexes displaying photoresponsive behavior

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51456-51469 ◽  
Author(s):  
Mohamed Gamal Mohamed ◽  
Jia-Huei Tu ◽  
Shih-Hung Huang ◽  
Yeo-Wan Chiang ◽  
Shiao-Wei Kuo
Keyword(s):  
Hydrogen Bonding ◽  
Long Range ◽  
Self Assembly ◽  
Secondary Structures ◽  
Supramolecular Complex ◽  
Supramolecular Complexes ◽  
Hydrogen Bonding Interactions ◽  
Lamellae Structure

Hierarchical lamellae-within-lamellae structure for the PTyr/AzoPy-C16 supramolecular complex, featuring long-range-ordered lamellae arising from the PTyr within lamellae arising from AzoPy-C16 units oriented in a perpendicular manner.

Intermolecular Interaction in Multicomponent Supramolecular Complexes through Hydrogen-Bonding Association

2002 ◽  
Vol 35 (23) ◽  
pp. 8846-8851 ◽  
Author(s):  
Jianwei Xu ◽  
Chaobin He ◽  
Kee Chua Toh ◽  
Xuehong Lu
Keyword(s):  
Hydrogen Bonding ◽  
Intermolecular Interaction ◽  
Supramolecular Complexes

Self-assembly through hydrogen bonding and photochemical properties of supramolecular complexes of bis(18-crown-6)stilbene with alkanediammonium ions

2017 ◽  
Vol 340 ◽  
pp. 80-87 ◽  
Author(s):  
Evgeny N. Ushakov ◽  
Timofey P. Martyanov ◽  
Artem I. Vedernikov ◽  
Oleg V. Pikalov ◽  
Asya A. Efremova ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Supramolecular Complexes ◽  
Photochemical Properties

Variations on a Cage Theme: Some Complexes of Bicyclic Polyamines as Supramolecular Synthons

2009 ◽  
Vol 62 (10) ◽  
pp. 1246 ◽  
Author(s):  
Ian J. Clark ◽  
Alessandra Crispini ◽  
Paul S. Donnelly ◽  
Lutz M. Engelhardt ◽  
Jack M. Harrowfield ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Aromatic Ring ◽  
Oxidation State ◽  
Metal Ion ◽  
Intermolecular Forces ◽  
Optically Active ◽  
Alphabetical Order ◽  
Supramolecular Synthons ◽  
Π Stacking ◽  
Parallel Arrays

Dedication: One of Alan Sargeson’s great abilities was to seek out knowledge on topics of which he was not the master from those people with the expertise. This led occasionally to publications with a ‘cricket team’ of authors but with a rich brew of information, often international. Alan also insisted that all authors were equal since, without any one, the paper would not be what it was. Hence, he endeavoured to pursue the policy, difficult to maintain over a period where an obsession with absurdities such as the order of authors and point-scoring based on meaningless publication indices became so important in the maintenance of research, of listing authors simply in alphabetical order. In describing work begun while he was still with us, we have attempted to adhere to his principles. Analysis of a body of crystallographic information concerning metal(ii) and metal(iii) complexes of macrobicyclic hexamine ligands and some of their derivatives provides evidence for the action of a variety of intermolecular forces within the lattices. Hydrogen bonding is universal and its forms depend strongly upon the oxidation state and the particular nature of the metal ion bound to the macrobicycle. The introduction of both aliphatic and aromatic substituents leads to lattices in which these substituents associate, although, in the case of aromatic substituents, this is not necessarily a consequence of ‘π-stacking’, despite the fact that the aromatic ring planes form parallel arrays. At least in the case of CoIII, stable enantiomers of the complexes can be obtained, and in {Δ-(+)589-[Co{(NH3)(CH3)sar}]}2Cl2(C6(CO2)6)·26H2O (sar = 3,6,10,13,16,19-hexa-azabicyclo[6.6.6]icosane), the benzene hexacarboxylate anion adopts a chiral conformation in the presence of the optically active cation.

Separation of Bioactive Biflavonoids from Rheedia gardneriana Using Chitosan Modified with Benzaldehyde

2005 ◽  
Vol 60 (5-6) ◽  
pp. 408-410 ◽  
Author(s):  
Leury G. J. Girardi ◽  
Michele Morsch ◽  
Ana E. Oliveira ◽  
Valdir Cechinel-Filho ◽  
Clóvis Antonio Rodrigues
Keyword(s):  
Hydrogen Bonding ◽  
Aromatic Ring ◽  
Silica Gel ◽  
Column Chromatography ◽  
Phenolic Hydroxyl ◽  
Amine Groups

This paper shows the influence of benzenic groups on the chitosan surface for the separation of bioactive biflavonoids from Rheedia gardneriana leaves. The yield of the biflavonoids using chitin modified with benzaldehyde (CH-Bz) as adsorbent in column chromatography was higher than that achieved with silica gel and chitosan. The presence of benzenic groups decreases the polarity of chitosan and consequently the interaction of hydrogen bonding between phenolic hydroxyl (OH) of biflavonoids and amine groups of the adsorbent. Therefore, the separation of these compounds appears to be the result of hydrophobicity and π-π interaction among electrons from the aromatic ring in sorbent and biflavonoid molecules.

scholarly journals Crystal structure of the thalidomide analog (3aR*,7aS*)-2-(2,6-dioxopiperidin-3-yl)hexahydro-1H-isoindole-1,3(2H)-dione

2018 ◽  
Vol 74 (11) ◽  
pp. 1595-1598 ◽  
Author(s):  
Yousef Hijji ◽  
Ellis Benjamin ◽  
Jerry P. Jasinski ◽  
Ray J. Butcher
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Aromatic Ring ◽  
Title Compound ◽  
Reciprocal Lattice ◽  
Three Dimensional ◽  
Racemic Mixture ◽  
Asymmetric Unit ◽  
Compound C ◽  
Graph Set

The title compound, C13H16N2O4, crystallizes in the monoclinic centrosymmetric space group, P21/c, with four molecules in the asymmetric unit, thus there is no crystallographically imposed symmetry and it is a racemic mixture. The structure consists of a six-membered unsaturated ring bound to a five-membered pyrrolidine-2,5-dione ring N-bound to a six-membered piperidine-2,6-dione ring and thus has the same basic skeleton as thalidomide, except for the six-membered unsaturated ring substituted for the aromatic ring. In the crystal, the molecules are linked into inversion dimers by R 2 2(8) hydrogen bonding involving the N—H group. In addition, there are bifurcated C—H...O interactions involving one of the O atoms on the pyrrolidine-2,5-dione with graph-set notation R 1 2(5). These interactions along with C—H...O interactions involving one of the O atoms on the piperidine-2,6-dione ring link the molecules into a complex three-dimensional array. There is pseudomerohedral twinning present which results from a 180° rotation about the [100] reciprocal lattice direction and with a twin law of 1 0 0 0 \overline{1} 0 0 0 \overline{1} [BASF 0.044 (1)].

Polysulfonylamine, CLVII [1]. Molekulare Cokristalle aus Di(4-halogenbenzolsulfonyl)aminen und Sauerstoffbasen: Lamellare Schichten mit engen Zwischenschichtkontakten der Art C-H···Hal, Cl ··· Cl oder Br ··· Br / Molecular Co-crystals of Di(4-halobenzenesulfonyl)amines and Oxygen Bases: Lamellar Layers with Close C-H···Hal, Cl · · · Cl or Br · · · Br

2002 ◽  
Vol 57 (9) ◽  
pp. 1051-1065 ◽  
Author(s):  
Thomas Hamann ◽  
Dagmar Henschel ◽  
Ilona Lange ◽  
Oliver Moers ◽  
Armand Blaschette ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Polar Region ◽  
Van Der Waals ◽  
Supramolecular Complexes ◽  
Dimethyl Formamide ◽  
Type I ◽  
Aromatic Rings ◽  
Triclinic Space Group ◽  
Space Group ◽  
Specific Recognition

Di(4-fluorobenzenesulfonyl)amine (DFBSA), di(4-chlorobenzenesulfonyl)amine (DCBSA) or di(4-bromobenzenesulfonyl)amine (DBBSA) were co-crystallized with equimolar amounts of pyridine-N-oxide (PyO), dimethyl formamide (DMF) or 1,3-dimethylurea (DMU), respectively, to form the supramolecular complexes DFBSA·PyO (1; triclinic, space group P1 , Z = 1), DCBSA·DMF (2; monoclinic, P21/n, Z = 1) and DBBSA·DMU (3; triclinic, P1 , Z = 1). Throughout the triad, the molecules are ordered into lamellar layers parallel to the xy plane. Owing to the folded conformations of the disulfonylamines, the layers display an inner polar region of oxygen bases and (SO2)2NH groups, outer apolar regions of aromatic rings, and interlayer regions hosting the halogen atoms. These arrays mimic the formerly reported structures of a series of ionic metal di(arenesulfonyl)amides. The intralamellar connectivity is governed by conventional hydrogen bonding and weak C-H···O bonds, the former comprising in structure 1 a very strong N-H···O-N interaction [N···O 250,9(2) pm, N-H···O 171(3)°], in 2 an N-H···O=C bond, and in 3 a set of one S2N-H···O=C and two N-H(urea)···O=S bonds. A centrosymmetric (PyO)2 dimer is present in structure 1. The juxtapositions of adjacent layers reflect halogen-specific recognition patterns (1: three short C-H···F sequences, all F···F distances beyond the van der Waals limit dW; 2: one short C-H···Cl sequence and one close Cl ··· Cl contact < dW, all other Cl ··· Cl > dW; 3: four short C-H···Br sequences and one close Br···Br contact < dW, all other Br···Br > dW). The interhalogen contacts in 2 and 3 are of the type I, as characterized by θ(C-X···X')≈ θ(C'-X' ··· X); the four angles θ lie in the range 166-175°

Supramolecular complexes constructed with carboxylate Cu(II) and 2-(2-pyridyl)-benzimidazole via hydrogen bonding

2006 ◽  
Vol 59 (10) ◽  
pp. 1107-1121 ◽  
Author(s):  
Li-Jun Zhou ◽  
Xin-Jun Luan ◽  
Yao-Yu Wang ◽  
Gene-Hsiang Lee ◽  
Qi-Zhen Shi ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Supramolecular Complexes
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