Unconventional dihydrogen-bond interaction induced cyanide-bridged chiral nano-sized magnetic molecular wheel: synthesis, crystal structure and systematic theoretical magnetism investigation

2019 ◽  
Vol 7 (12) ◽  
pp. 3623-3633 ◽  
Author(s):  
Daopeng Zhang ◽  
Joan Cano ◽  
Wenlong Lan ◽  
Hui Liu ◽  
Fenggang Sun ◽  
...  

The new chiral nano-size compounds showing SMM characteristic have been structurally and magnetically investigated in detail.

2005 ◽  
Vol 127 (45) ◽  
pp. 15976-15982 ◽  
Author(s):  
José Giner Planas ◽  
Clara Viñas ◽  
Francesc Teixidor ◽  
Aleix Comas-Vives ◽  
Gregori Ujaque ◽  
...  

1946 ◽  
Vol 19 (1) ◽  
pp. 14-22
Author(s):  
L. Bateman ◽  
G. A. Jeffrey

Abstract A peculiar lack of olefinic reactivity, combined with a facility for cyclization of methyl and ethyl Δ1,5-hexadiene-1, 1, 3, 3, 4, 4, 6, 6-octacarboxylates, has been attributed by Ingold, Parekh, and Shoppee to ring-chain mesomerism. A reinvestigation of these and related compounds has now been made by using x-ray methods, and it is shown that the crystal structure of the methyl ester is incompatible with the cis-configuration required for such interspatial double-bond saturation. A radical disruption of a mesomeric system by crystallization from solution is improbable and, an earlier formulation incorporating a bicyclobutane nucleus being rejected on chemical grounds, it is necessary to seek a new interpretation of the anomalous reactivity. We suggest that the determinative condition is hyperconjugation throughout the carbon framework of the molecule, and discuss this in relation to 1,5-dienes generally.


2015 ◽  
Vol 71 (5) ◽  
pp. o351-o352 ◽  
Author(s):  
Kamel Ouari ◽  
Moufida Merzougui ◽  
Sabrina Bendia ◽  
Corinne Bailly

The title compound, C34H40N2O2, exists in an extended conformation and has crystallographically imposed centrosymmetry. The crystal packing can be described as being composed of parallel layers stacked along [010]. The zwitterionic structure is stabilized by an intramolecular N—H...O hydrogen-bond interaction.


2015 ◽  
Vol 71 (12) ◽  
pp. o933-o934
Author(s):  
Shaaban K. Mohamed ◽  
Joel T. Mague ◽  
Mehmet Akkurt ◽  
Alaa A. Hassan ◽  
Ahmed T. Abdel-Aziz ◽  
...  

The conformation of the title compound, C14H19N3S, is partially determined by an intramolecular N—H...N hydrogen-bond interaction, although the N—H...N angle of 108° is quite small. The cyclohexylidene ring has a chair conformation and its mean plane is inclined to the benzene ring by 46.30 (8)°. In the crystal, molecules are linked by pairs of N—H...S hydrogen bonds, forming inversion dimers, with anR22(8) ring motif. The dimers are reinforced by pairs of C—H...S hydrogen bonds, and are linked by further weak C—H...S hydrogen bonds, forming chains propagating along [100].


2020 ◽  
Vol 142 (18) ◽  
pp. 8532-8538 ◽  
Author(s):  
Peng-Fei Cui ◽  
Yue-Jian Lin ◽  
Zhen-Hua Li ◽  
Guo-Xin Jin

2012 ◽  
Vol 569 ◽  
pp. 103-106
Author(s):  
Hai Xing Liu ◽  
Jing Zhong Xiao ◽  
Jing Wang ◽  
Fang Fang Jian ◽  
Hui Juan Yue ◽  
...  

phosphorus vandium heteropolyacid sodium, H78N12NaO116P2V30, is prepared by the hydrothermal method. Cubic, Fm-3m. a =b = c = 20.022(2) Å α=β=γ= 90. V=10680.0(17) Å3. Z=4. R1 =0.0388, wR2 =0.1200. T=298(2) K. The V atoms are linked with O atom bridge. The molecular structure is stabilized by the O-H...O and O-H...N intermolecular and intramolecular hydrogen-bond interaction.


1999 ◽  
Vol 121 (27) ◽  
pp. 6337-6343 ◽  
Author(s):  
Wim T. Klooster ◽  
Thomas F. Koetzle ◽  
Per E. M. Siegbahn ◽  
Thomas B. Richardson ◽  
Robert H. Crabtree

RSC Advances ◽  
2015 ◽  
Vol 5 (36) ◽  
pp. 28354-28359 ◽  
Author(s):  
Jin-Ting Wu ◽  
Jian-Guo Zhang ◽  
Tong Li ◽  
Zhi-Min Li ◽  
Tong-Lai Zhang

A novel binary cocrystal explosive of NTO was discovered and it exhibits strong intermolecular hydrogen bond interaction in crystal structure.


Sign in / Sign up

Export Citation Format

Share Document