Self-assembly of one-dimensional polymers by coordination and hydrogen bonding in palladium(II) complexes

1999 ◽  
Vol 77 (1) ◽  
pp. 155-157 ◽  
Author(s):  
Zengquan Qin ◽  
Hilary A Jenkins ◽  
Simon J Coles ◽  
Kenneth W Muir ◽  
Richard J Puddephatt
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Key Words ◽  
Self Assembly ◽  
One Dimensional ◽  
Carboxylic Acid Groups ◽  
Quinoline Carboxylic Acid ◽  
Structure Determinations

The ligands L = pyridine- or quinoline-carboxylic acid easily give complexes trans-[PdCl2L2], which self-assemble through hydrogen bonding between carboxylic acid groups to give one-dimensional polymers, as proved by structure determinations when L = NC5H4COOH-4, NC5H4COOH-3, and 2-Ph-NC9H5COOH-4.Key words: polymer, hydrogen-bonding, palladium, coordination.

scholarly journals Straightforward Preparation of Supramolecular Janus Nanorods by Hydrogen Bonding of End-Functionalized Polymers

2020 ◽  
Author(s):  
Shuaiyuan Han ◽  
Sandrine Pensec ◽  
Cédric Lorthioir ◽  
Jacques Jestin ◽  
Jean-Michel Guigner ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Functional Materials ◽  
Phase Segregation ◽  
Building Blocks ◽  
Functionalized Polymers ◽  
Nanometer Range ◽  
One Dimensional ◽  
Oil In Water ◽  
First Time

Janus cylinders are one-dimensional colloids that have two faces with different compositions and functionalities and are useful as building blocks for advanced functional materials. Such anisotropic objects are difficult to prepare with nanometric dimensions. Here we describe a robust and versatile strategy to form micrometer long Janus nanorods with diameters in the 10-nanometer range, by self-assembly in water of end-functionalized polymers. For the first time, the Janus topology is not a result of the phase segregation of incompatible polymer arms, but is driven by the interactions between unsymmetrical and complementary hydrogen bonded stickers. It is therefore independent of the actual polymers used and works even for compatible polymers. To illustrate their applicative potential, we show that these Janus nanorods can efficiently stabilize oil-in-water emulsions.

scholarly journals Hydrogen bond guided synthesis of close-packed one-dimensional graphdiyne on the Ag(111) surface

2019 ◽  
Vol 10 (47) ◽  
pp. 10849-10852 ◽  
Author(s):  
Zhi Chen ◽  
Tao Lin ◽  
Haohan Li ◽  
Fang Cheng ◽  
Chenliang Su ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Self Assembly ◽  
One Dimensional

Aided by hydrogen bonding, alkyne and oxazole functionalized precursors undergo uniform self-assembly, which serves as a template for the fabrication of one-dimensional graphdiyne-like wires on the Ag(111) surface.

Molecular cocrystals of 5-(4-bromophenyl)-1,3,4-thiadiazol-2-amine: hydrogen bonding in the structures of the 1:1 adduct with 2-(naphthalen-2-yloxy)acetic acid and the salt with 3,5-dinitrobenzoic acid

2013 ◽  
Vol 69 (9) ◽  
pp. 1034-1038 ◽  
Author(s):  
Graham Smith ◽  
Daniel E. Lynch
Keyword(s):  
Hydrogen Bonding ◽  
Acetic Acid ◽  
Carboxylic Acid ◽  
Chain Structure ◽  
Dihedral Angles ◽  
Naphthalene Ring ◽  
One Dimensional ◽  
Amine Hydrogen ◽  
Thiadiazole Ring ◽  
Ring Centroid

The crystal structures of the anhydrous products from the interaction of 5-(4-bromophenyl)-1,3,4-thiadiazol-2-amine with 2-(naphthalen-2-yloxy)acetic acid,viz.the 1:1 adduct C8H6BrN3S·C12H10O3, (I), and with 3,5-dinitrobenzoic acid,viz.the salt 2-amino-5-(4-bromophenyl)-1,2,4-thiadiazol-3-ium 3,5-dinitrobenzoate, C8H7BrN3S+·C7H3N2O6−, (II), have been determined. In adduct (I), a heterodimer is formed through a cyclic hydrogen-bonding motif [graph setR22(8)], involving carboxylic acid–heteroatom O—H...N and amine–carboxylic acid N—H...O interactions. The heterodimers are essentially planar, with a thiadiazole-to-naphthalene ring dihedral angle of 15.9 (2)° and an intramolecular thiadiazole-to-benzene ring angle of 4.7 (2)°. An amine–heteroatom N—H...N hydrogen bond between the heterodimers generates a one-dimensional chain structure extending down [001]. Also present are weak benzene–benzene and naphthalene–naphthalene π–π stacking interactions down thebaxis [minimum ring-centroid separation = 3.936 (3) Å]. With salt (II), the cation–anion association is also through a cyclicR22(8) motif but involving duplex N—H...Ocarboxylatehydrogen bonds, giving a heterodimer that is close to planar [dihedral angles between the thiadiazole ring and the two benzene rings = 5.00 (16) (intra) and 7.23 (15)° (inter)]. A secondary centrosymmetric cyclic R_{4}^{2}(8) N—H...Ocarboxylatehydrogen-bonding association involving the second amino H atom generates a heterotetramer. Also present in the crystal structure are weak π–π interactions between thiadiazolium rings [minimum ring-centroid separation = 3.9466 (18) Å], as well as a short Br...Onitrointeraction [3.314 (4) Å]. The two structures reported here now provide a total of three crystallographically characterized examples of cocrystalline products from the interaction of 5-(4-bromophenyl)-1,3,4-thiadiazol-2-amine with carboxylic acids, of which only one involves proton transfer.

Inhibitors of the geotropic response in plants. The crystal structures of 2-[(Naphthalen-2-yl)carbamoyl]benzoic acid (β-Naptalam), 2-(Phenylcarbamoyl)-benzoic acid and 2-(5-Phenyl-1,3,4-oxadiazol-2-yl)benzoic acid

1983 ◽  
Vol 36 (12) ◽  
pp. 2455 ◽  
Author(s):  
G Smith ◽  
CHL Kennard ◽  
GF Katekar
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Benzoic Acid ◽  
Crystal Structures ◽  
Carboxylic Acids ◽  
Intermolecular Hydrogen Bonding ◽  
X Ray Diffraction ◽  
X Ray ◽  
Carboxylic Acid Groups ◽  
Phthalamic Acid

The crystal structures of three geotropically active phthalamic acid derivatives have been determined by means of X-ray diffraction and the structural systematics for the series compared. The three acids are conformationally similar and, in contrast to the tendency among carboxylic acids to form hydrogen-bonded dimers, they exist as monomers with intermolecular hydrogen bonding between the carboxylic acid groups and the nitrogen or oxygen of the amide side chains.

Self-assembly and characterization of hydrogen-bonding one-dimensional nanostructure based on 9,10-anthraquinone derivatives

CrystEngComm ◽  
2011 ◽  
Vol 13 (19) ◽  
pp. 5783 ◽  
Author(s):  
Xiuhua Wang ◽  
Sufan Wang ◽  
Li Liu ◽  
Mingwang Shao ◽  
Shifeng Li
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
One Dimensional ◽  
Anthraquinone Derivatives

Dimethyl 3t,4t-dicarboxytetrahydrofuran-2r,5c-dicarboxylate

2006 ◽  
Vol 62 (5) ◽  
pp. o1724-o1726 ◽  
Author(s):  
Claude Villiers ◽  
Pierre Thuéry ◽  
Michel Ephritikhine
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Title Compound ◽  
Membered Ring ◽  
Tetracarboxylic Acid ◽  
Carboxylic Acid Groups ◽  
Compound C ◽  
Twist Conformation

Esterification of tetrahydrofuran-2r,3t,4t,5c-tetracarboxylic acid gave selectively the title compound, C10H12O9, in which the two more acidic carboxylic acid groups, in positions 2 and 5, have been esterified. The five-membered ring is in a twist conformation. Hydrogen bonding results in double chains, or ribbons, running along the c axis.

Formal transfers of hydride from carbon–hydrogen bonds. Attempted generation of H2 by intramolecular protonolyses of the activated carbon–hydrogen bonds of dihydrobenzimidazoles

1996 ◽  
Vol 74 (5) ◽  
pp. 689-696 ◽  
Author(s):  
Philippe Brunet ◽  
James D. Wuest
Keyword(s):  
Activated Carbon ◽  
Carboxylic Acid ◽  
Hydrogen Bonds ◽  
Key Words ◽  
Hydride Generation ◽  
Carboxylic Acid Groups ◽  
Lone Pairs ◽  
Close Proximity ◽  
Acidic Sites ◽  
Carbon Hydrogen Bonds

Protonolyses of carbon–hydrogen bonds can occur under suitable conditions to produce carbocations and H2. In an effort to accelerate these fundamental reactions, we have attempted to make them intramolecular by devising compounds in which carbon–hydrogen bonds designed to be particularly good formal donors of hydride are held in close proximity to acidic sites. Dihydrobenzimidazoles 4 and 11 are compounds of this type, since the carbon–hydrogen bonds at C2 are activated as formal donors of hydride by adjacent lone pairs in a dihydroaromatic ring, and acidic anilinium and carboxylic acid groups are held nearby. Unfortunately, this proximity does not lead to the formation of H2 by protonolysis; instead, other reactions intervene when compounds 4 and 11 are subjected to pyrolysis. Key words: intramolecular protonolysis of carbon–hydrogen bonds, formal donors of hydride, generation of H2, dihydrobenzimidazoles.

Exocyclic self-assembly behavior of carboxylic acid and lariat ether macrocyclic hosts: regulation by pendent arm

RSC Advances ◽  
2015 ◽  
Vol 5 (84) ◽  
pp. 68864-68874
Author(s):  
Rong Guo ◽  
Wei Wang ◽  
Weiping Yang ◽  
Yuanyin Chen ◽  
Shuling Gong
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Self Assembly ◽  
Building Block ◽  
Hydrogen Bonding Interaction ◽  
Lariat Ether ◽  
Diazacrown Ethers ◽  
Bonding Interaction ◽  
Assembly Behavior

An exocyclic supramolecular building block through O–H⋯N hydrogen bonding interaction for the assembly of di-sidearm dibenzo-diazacrown ethers bearing a flexibility sidearm with PTA acid.

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