scholarly journals NMR Observation of Intermolecular Hydrogen Bonds between Protein Tyrosine Side-Chain OH and DNA Phosphate Groups

2020 ◽  
Vol 124 (6) ◽  
pp. 1065-1070 ◽  
Author(s):  
Binhan Yu ◽  
Channing C. Pletka ◽  
Junji Iwahara
Keyword(s):  
Hydrogen Bonds ◽  
Side Chain ◽  
Intermolecular Hydrogen Bonds ◽  
Protein Tyrosine ◽  
Phosphate Groups

Stabilization of hydrophobic domains in hydrogel by intermolecular hydrogen bonds between carboxylic groups at the distal end of alkyl side-chain

Polymer ◽  
2002 ◽  
Vol 43 (26) ◽  
pp. 7467-7475 ◽  
Author(s):  
Takeshi Karino ◽  
Naoki Masui ◽  
Masayuki Hiramatsu ◽  
Jun Yamaguchi ◽  
Kimio Kurita ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Side Chain ◽  
Alkyl Side Chain ◽  
Intermolecular Hydrogen Bonds ◽  
Carboxylic Groups

Ultrafast excited state decay of natural UV filters: from intermolecular hydrogen bonds to a conical intersection

2018 ◽  
Vol 20 (22) ◽  
pp. 15074-15085 ◽  
Author(s):  
Peter S. Sherin ◽  
Yuri P. Tsentalovich ◽  
Eric Vauthey ◽  
Enrico Benassi
Keyword(s):  
Excited State ◽  
Hydrogen Bonds ◽  
Excited States ◽  
Conical Intersection ◽  
Side Chain ◽  
Uv Filters ◽  
Intermolecular Hydrogen Bonds ◽  
Unsaturated Bond ◽  
State Decay ◽  
Solvent Properties

An unsaturated bond in the side chain leads to the ultrafast decay of the excited statesviaa conical intersection independent of solvent properties.

Structures and Properties of Supramolecular Liquid-Crystalline Side-Chain Polymers Built through Intermolecular Hydrogen Bonds

1996 ◽  
Vol 29 (27) ◽  
pp. 8734-8739 ◽  
Author(s):  
Takashi Kato ◽  
Hideyuki Kihara ◽  
Seiji Ujiie ◽  
Toshiyuki Uryu ◽  
Jean M. J. Fréchet
Keyword(s):  
Hydrogen Bonds ◽  
Liquid Crystalline ◽  
Side Chain ◽  
Intermolecular Hydrogen Bonds ◽  
Structures And Properties

A Crystallographic Study of Bis[S-benzyl-5-bromo-2-oxoindolin-3-ylidenemethanehydrazonthioate] Disulfide Solvated with Dimethylsulfoxide

2012 ◽  
Vol 9 (2) ◽  
pp. 87
Author(s):  
Mohd Abdul Fatah Abdul Manan ◽  
M. Ibrahim M. Tahir ◽  
Karen A. Crouse ◽  
Fiona N.-F. How ◽  
David J. Watkin
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Solvent Molecule ◽  
Site Occupancy ◽  
Unit Cell Parameters ◽  
Intermolecular Hydrogen Bonds ◽  
Triclinic Space Group ◽  
Cell Parameters ◽  
Crystallographic Study ◽  
Thiol Form

The crystal structure of the title compound has been determined. The compound crystallized in the triclinic space group P -1, Z = 2, V = 1839 .42( 18) A3 and unit cell parameters a= 11. 0460( 6) A, b = 13 .3180(7) A, c=13. 7321 (8) A, a = 80.659(3 )0, b = 69 .800(3 )0 and g = 77 .007 (2)0 with one disordered dimethylsulfoxide solvent molecule with the sulfur and oxygen atoms are distributed over two sites; S101/S102 [site occupancy factors: 0.6035/0.3965] and 0130/0131 [site occupancy factor 0.3965/0.6035]. The C22-S2 l and C 19-S20 bond distances of 1. 779(7) A and 1. 788(8) A indicate that both of the molecules are connected by the disulfide bond [S20-S21 2.055(2) A] in its thiol form. The crystal structure reveals that both of the 5-bromoisatin moieties are trans with respect to the [S21-S20 and CI 9-Nl 8] and [S20-S21 and C22-N23] bonds whereas the benzyl group from the dithiocarbazate are in the cis configuration with respect to [S21-S20 and C19-S44] and [S20-S21 and C22-S36] bonds. The crystal structure is further stabilized by intermolecular hydrogen bonds of N9-H35···O16 formed between the two molecules and N28-H281 ···O130, N28-H281 ···O131 and C4 l-H4 l l ···O 131 with the solvent molecule.

scholarly journals Organotin(IV) selenate derivatives – Crystal structure of [{(Ph3Sn)2SeO4} ⋅ CH3OH] n

2021 ◽  
Vol 44 (1) ◽  
pp. 213-217
Author(s):  
Waly Diallo ◽  
Hélène Cattey ◽  
Laurent Plasseraud
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Point Of View ◽  
Intermolecular Hydrogen Bonds

Abstract Crystallization of [(Ph3Sn)2SeO4] ⋅ 1.5H2O in methanol leads to the formation of [{(Ph3Sn)2SeO4} ⋅ CH3OH] n (1) which constitutes a new specimen of organotin(IV) selenate derivatives. In the solid state, complex 1 is arranged in polymeric zig-zag chains, composed of alternating Ph3Sn and SeO4 groups. In addition, pendant Ph3Sn ⋅ CH3OH moieties are branched along chains according to a syndiotactic organization and via Sn-O-Se connections. From a supramolecular point of view, intermolecular hydrogen bonds established between the selenate groups (uncoordinated oxygen) and the hydroxyl functions (CH3OH) of the pendant groups link the chains together.

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