Competing hydrogen bonding pattern yields thermo-thickening supramolecular polymer

2020 ◽  
Author(s):  
Laurent Bouteiller
Keyword(s):  
Hydrogen Bonding ◽  
Supramolecular Polymer ◽  
Hydrogen Bonding Pattern

scholarly journals A Competing Hydrogen Bonding Pattern to Yield a Thermo‐Thickening Supramolecular Polymer

2019 ◽  
Vol 58 (39) ◽  
pp. 13849-13853 ◽  
Author(s):  
Virgile Ayzac ◽  
Quentin Sallembien ◽  
Matthieu Raynal ◽  
Benjamin Isare ◽  
Jacques Jestin ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Supramolecular Polymer ◽  
Hydrogen Bonding Pattern

scholarly journals A Competing Hydrogen Bonding Pattern to Yield a Thermo‐Thickening Supramolecular Polymer

2019 ◽  
Vol 131 (39) ◽  
pp. 13987-13991
Author(s):  
Virgile Ayzac ◽  
Quentin Sallembien ◽  
Matthieu Raynal ◽  
Benjamin Isare ◽  
Jacques Jestin ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Supramolecular Polymer ◽  
Hydrogen Bonding Pattern

Five pseudopolymorphs of 6-amino-2-thiouracil: absence of N—H...S hydrogen bonds

2012 ◽  
Vol 69 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Wilhelm Maximilian Hützler ◽  
Michael Bolte
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Cambridge Structural Database ◽  
Hydrogen Bonding Pattern ◽  
Crystallization Experiments ◽  
Structural Database ◽  
Thiouracil Derivatives

In order to study the preferred hydrogen-bonding pattern of 6-amino-2-thiouracil, C4H5N3OS, (I), crystallization experiments yielded five different pseudopolymorphs of (I), namely the dimethylformamide disolvate, C4H5N3OS·2C3H7NO, (Ia), the dimethylacetamide monosolvate, C4H5N3OS·C4H9NO, (Ib), the dimethylacetamide sesquisolvate, C4H5N3OS·1.5C4H9NO, (Ic), and two different 1-methylpyrrolidin-2-one sesquisolvates, C4H5N3OS·1.5C5H9NO, (Id) and (Ie). All structures containR21(6) N—H...O hydrogen-bond motifs. In the latter four structures, additionalR22(8) N—H...O hydrogen-bond motifs are present stabilizing homodimers of (I). No type of hydrogen bond other than N—H...O is observed. According to a search of the Cambridge Structural Database, most 2-thiouracil derivatives form homodimers stabilized by anR22(8) hydrogen-bonding pattern, with (i) only N—H...O, (ii) only N—H...S or (iii) alternating pairs of N—H...O and N—H...S hydrogen bonds.

scholarly journals Crystal structures of butyl 2-amino-5-hydroxy-4-(4-nitrophenyl)benzofuran-3-carboxylate and 2-methoxyethyl 2-amino-5-hydroxy-4-(4-nitrophenyl)benzofuran-3-carboxylate

2019 ◽  
Vol 75 (6) ◽  
pp. 880-887 ◽  
Author(s):  
Rosita Diana ◽  
Angela Tuzi ◽  
Barbara Panunzi ◽  
Antonio Carella ◽  
Ugo Caruso
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Molecular Structures ◽  
Antitumoral Activity ◽  
Space Group ◽  
One Dimensional ◽  
Axis Direction ◽  
Hydrogen Bonding Pattern ◽  
Butyl Group

The title benzofuran derivatives 2-amino-5-hydroxy-4-(4-nitrophenyl)benzofuran-3-carboxylate (BF1), C19H18N2O6, and 2-methoxyethyl 2-amino-5-hydroxy-4-(4-nitrophenyl)benzofuran-3-carboxylate (BF2), C18H16N2O7, recently attracted attention because of their promising antitumoral activity. BF1 crystallizes in the space group P\overline{1}. BF2 in the space group P21/c. The nitrophenyl group is inclined to benzofuran moiety with a dihedral angle between their mean planes of 69.2 (2)° in BF1 and 60.20 (6)° in BF2. A common feature in the molecular structures of BF1 and BF2 is the intramolecular N—H...Ocarbonyl hydrogen bond. In the crystal of BF1, the molecules are linked head-to-tail into a one-dimensional hydrogen-bonding pattern along the a-axis direction. In BF2, pairs of head-to-tail hydrogen-bonded chains of molecules along the b-axis direction are linked by O—H...Omethoxy hydrogen bonds. In BF1, the butyl group is disordered over two orientations with occupancies of 0.557 (13) and 0.443 (13).

Construction and morphology of non-covalently double-crosslinked supramolecular polymer networks

2019 ◽  
Vol 10 (34) ◽  
pp. 4740-4745 ◽  
Author(s):  
Senbin Chen ◽  
Ke Wang ◽  
Zhen Geng ◽  
Yu Chen ◽  
Xihuang Zheng ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Polymer Networks ◽  
Functionalized Polymers ◽  
Metal Coordination ◽  
Supramolecular Polymer ◽  
Supramolecular Networks

A straightforward synthesis of α-Ba, ω-TAP functionalized polymers, Ba-PnBuA-TAP, is reported, leading to the formation of double-crosslinked supramolecular networks driven via the sequential hydrogen-bonding association and metal-coordination.

Sign in / Sign up

Export Citation Format

Share Document