Adsorption of a Chain Polymer between Two Plates

1971 ◽  
Vol 55 (9) ◽  
pp. 4318-4336 ◽  
Author(s):  
E. A. DiMarzio ◽  
R. J. Rubin
Keyword(s):  
Chain Polymer ◽  
A Chain

Wechselwirkungen in Molekülkristallen, 156 [1, 2]. Kristallzüchtung und Strukturbestimmung von (Imidodiphosphat)-Alkalisalzen mit Kationen niedriger und hoher Koordinationszahlen / Interaction in Molecular Crystals, 156 [1, 2]. Crystal Growth and Structure Determination of Alkali(imidodiphosphate) Salts with Cations of Low and High Coordination Numbers

2000 ◽  
Vol 55 (9) ◽  
pp. 773-784 ◽  
Author(s):  
Hans Bock ◽  
Erik Heigel ◽  
Norbert Nagel
Keyword(s):  
Crystal Growth ◽  
Coordination Number ◽  
Molecular Crystals ◽  
Chelating Ligands ◽  
Chain Polymer ◽  
Coordination Numbers ◽  
Structural Differences ◽  
A Chain ◽  
High Coordination

Imidodiphosphates ⊖N[PO(OR)2]2 and Imidodiphosphonates ⊖N[POR2]2 are effective chelating ligands for a variety of metal cations including even Na⊕, for which a lipophilically wrapped hexameric polyion cluster has been structurally characterized. The corresponding hexameric lithium and polyrubidium ion complexes reported here exhibit considerable structural differences: The rather small Li⊕ cations of coordination number five and tetraphenylimidodiphosphate form an isolated hexameric aggregate analogous to the Na⊕ one, whereas the larger Rb⊕ with coordination number seven and (3,4-dimethylphenyl)substituents crystallizes as a chain polymer. Based on the crystal structures, the dominant Coulomb attractions between cations and anions, the spatial requirement of the ligands and the essential phenyl/phenyl interactions in their lipophilic skin are discussed

Supramolecular self-assembly in triphenyllead(IV) dimethylphosphinodithioate, x1[Ph3PbS2PMe2], a chain polymer built through intermolecular Pb … S secondary bonds

Polyhedron ◽  
1998 ◽  
Vol 17 (11-12) ◽  
pp. 2043-2047 ◽  
Author(s):  
Frank T. Edelmann ◽  
Ionel Haiduc ◽  
Cristian Silvestru ◽  
Hans-Georg Schmidt ◽  
Mathias Noltemeyer
Keyword(s):  
Self Assembly ◽  
Chain Polymer ◽  
Secondary Bonds ◽  
A Chain

3-(Pyridin-4-yl)acetylacetone: a donor ligand towards mercury(II) halides and a versatile linker for complex materials

2017 ◽  
Vol 73 (5) ◽  
pp. 981-991 ◽  
Author(s):  
Khai-Nghi Truong ◽  
Carina Merkens ◽  
Ulli Englert
Keyword(s):  
Building Blocks ◽  
Complex Materials ◽  
Chain Polymer ◽  
Donor Ligand ◽  
One Dimensional ◽  
Pyridine Ligands ◽  
Bromide Derivative ◽  
Metal Products ◽  
A Chain ◽  
Cation Ratio

The ditopic organic molecule 3-(pyridin-4-yl)acetylacetone (HacacPy) acts as a pyridine-type ligand towards HgX2(X= Cl, Br, I). The nature of the anion and the ligand-to-cation ratio dominate the outcome of the reaction. Two different coordination compounds form with HgCl2, namely a ligand-rich mononuclear complex, HgCl2(HacacPy)2, and a ligand-deficient one-dimensional chain polymer, [Hg(μ-Cl)2(HacacPy)]1∞, with five-coordinated HgIIcations. Two compounds are also observed for HgBr2, a molecular complex isomorphous to the chloride derivative and a chain polymer with the composition [Hg(μ-Br)Br(HacacPy)]1∞, in which the cations are four-coordinated. The ligand-rich mononuclear and ligand-deficient polymeric chloride and bromide complexes may be interconvertedviathermal degradation and mechanochemical synthesis. In contrast to the chloride and bromide compounds, the reaction product with HgI2does not depend on the ligand-to-cation ratio but corresponds to [Hg(μ-I)I(HacacPy)]1∞, isomorphous to the bromide derivative. TheN-coordinated HacacPy complexes could not be deprotonated and further crosslinked with a second cation. Synthesis of mixed-metal products could be achieved, however, by deprotonation of the acetylacetone moiety in HacacPy and formation of tris-chelated Fe(acacPy)3and Al(acacPy)3complexes in the first step. These mononuclear building blocks act as bridging poly(pyridine) ligands towards HgIIhalides and form two structure types. The first represents a one-dimensional ladder, with the tris(ligand) complexes acting as triconnected nodes and the HgIIhalides acting as linkers. In the alternative unprecedented product, both the tris(ligand) complexes and the [HgX2(μ-X)HgX] groups act as equivalent triconnected nodes. They form a uninodal two-dimensional coordination network with vertex symbol 4.82andfestopology.

Granular chain escape from a pore in a wall in the presence of particles on one side: a comparison to polymer translocation

Soft Matter ◽  
2018 ◽  
Vol 14 (26) ◽  
pp. 5420-5427 ◽  
Author(s):  
Fereshteh Samadi Taheri ◽  
Hossein Fazli ◽  
Masao Doi ◽  
Mehdi Habibi
Keyword(s):  
Escape Behavior ◽  
Chain Polymer ◽  
Granular Chain ◽  
Nano Scale ◽  
Macro Scale ◽  
Polymer Translocation ◽  
Scale Experiment ◽  
A Chain

Macro-scale experiment and nano-scale simulation of a chain/polymer show the same escape behavior through the pore in the wall in the presence of particles.

scholarly journals Crystal structure of the unusual coordination polymer catena-poly[[gold(I)-μ-1,2-bis(diphenylphosphinothioyl)ethane-κ2 S:S′] dibromidoaurate(I)]

2020 ◽  
Vol 76 (11) ◽  
pp. 1768-1770
Author(s):  
Christina Taouss ◽  
Marina Calvo ◽  
Peter G. Jones
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Title Compound ◽  
Polymeric Chain ◽  
Chain Polymer ◽  
Twofold Axis ◽  
A Chain ◽  
Aurophilic Interactions

In the title compound, {[Au(C26H24P2S2)][AuBr2]} n , the gold(I) centres of the cation are coordinated by the P=S groups of the disulfide ligands to form a chain polymer parallel to the c axis. Both independent gold atoms lie on the same twofold axis, and the midpoint of the H2C—CH2 bond lies on an inversion centre. The anions flank the polymeric chain; they are connected to it by short aurophilic interactions and C—H...Br contacts, and to each other by Br...Br contacts.

Molecular Cocrystals of Aromatic Carboxylic Acids with 1,1-Diethylurea: Synthesis and the Crystal Structures of a Series of Nitro-Substituted Analogues

2000 ◽  
Vol 53 (3) ◽  
pp. 203 ◽  
Author(s):  
Graham Smith ◽  
Michael G. Coyne ◽  
Jonathan M. White
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acids ◽  
Acid Group ◽  
X Ray Diffraction ◽  
Chain Polymer ◽  
Aromatic Carboxylic Acids ◽  
Nitrobenzoic Acid ◽  
Simple Chain ◽  
A Chain ◽  
Polymeric Structures

Molecular adducts of 1,1-diethylurea with the nitro-substituted aromatic carboxylic acids 2-nitrobenzoic acid, [(C7H5NO4)(C5H12N2O)] (1), 3-nitrobenzoic acid, [(C7H5NO4)(C5H12N2O)] (2), 4-nitrobenzoic acid, [(C7H5NO4)2(C5H12N2O)] (3), 3,5-dinitrobenzoic acid, [(C7H4N2O6)(C5H12N2O)] (4), 5-nitrosalicylic acid, [(C7H5NO5)(C5H12N2O)] (5) and 3,5-dinitrosalicylic acid, [(C7H4N2O7)(C5H12N2O)] (6), have been prepared and characterized by using infrared spectroscopy, and, in the case of four of these [(1), (4), (5) and (6)], by single-crystal X-ray diffraction methods. In all examples, primary cyclic hydrogen-bonding interactions are found between the amide group of the substituted urea and the carboxylic acid group of the acid, while further peripheral associations result predominantly in simple chain polymeric structures, and in one case [adduct (1)], a cyclic tetramer. The crystal structure of the parent 1,1-diethylurea has also been determined, revealing a cyclic hydrogen-bonded tetramer which forms into a chain polymer by weak hydrogen-bonding associations.

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