Design, synthesis, and crystal structure of self-assembling norbornene (NBE)-supported two-helix bundles: A unique example of Janus helicity in the solid-state structure of NBE(Aib5)2

Biopolymers ◽  
2000 ◽  
Vol 54 (4) ◽  
pp. 249-261 ◽  
Author(s):  
Darshan Ranganathan ◽  
Sunita Kurur ◽  
Isabella L. Karle
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
State Structure ◽  
Design Synthesis ◽  
Synthesis And Crystal Structure ◽  
Solid State Structure ◽  
Self Assembling

Improved synthesis and crystal structure of the parent 1,3,5-trisilacyclohexane

2016 ◽  
Vol 71 (1) ◽  
pp. 77-79 ◽  
Author(s):  
Eugen Weisheim ◽  
Hans-Georg Stammler ◽  
Norbert W. Mitzel
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Electron Diffraction ◽  
Gas Phase ◽  
Gaseous Phase ◽  
Chair Conformation ◽  
Gas Electron Diffraction ◽  
State Structure ◽  
Synthesis And Crystal Structure ◽  
Bond Lengths

AbstractThe crystal structure and an improved synthesis of 1,3,5-trisilacyclohexane are reported. The solid state structure is compared with the reported structure determined in the gas phase by gas electron diffraction (GED). 1,3,5-Trisilacyclohexane adopts a chair conformation in the solid state. The Si–C bond lengths as well as all angles of 1,3,5-trisilacyclohexane in the solid state have similar dimensions compared to the structure in the gaseous phase.

scholarly journals Crystal structure of 2-cyano-1-methylpyridinium tetrafluoroborate

2015 ◽  
Vol 71 (10) ◽  
pp. o697-o698 ◽  
Author(s):  
Francesca A. Vaccaro ◽  
Lynn V. Koplitz ◽  
Joel T. Mague
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Solid State ◽  
Three Dimensional ◽  
Asymmetric Unit ◽  
State Structure ◽  
Solid State Structure ◽  
Two Component

The asymmetric unit of the title salt, C7H7N2+·BF4−, comprises two independent but nearly identical formula units. The solid-state structure comprises corrugated layers of cations and anions, formed by C—H...F hydrogen bonding, that are approximately parallel to (010). Further C—H...F hydrogen bonding consolidates the three-dimensional architecture. The sample was refined as a two-component non-merohedral twin.

Calcium nickel orthophosphate: crystal structure of Ca8.5Ni9.5(PO4)12

1995 ◽  
Vol 210 (11) ◽  
Author(s):  
B. Elbali ◽  
A. Boukhari ◽  
E. M. Holt ◽  
J. Aride
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
State Structure ◽  
Solid State Structure ◽  
Orthophosphate Crystal

AbstractA calcium nickel orthophosphate complex has been isolated and shown to display a solid state structure similar to that of

N,N,N′-Triacetyl-2,6-diamino-4-tert-butylanisole

2006 ◽  
Vol 62 (4) ◽  
pp. o1300-o1301
Author(s):  
Matthew I. J. Polson ◽  
Peter J. Steel
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Benzene Ring ◽  
Title Compound ◽  
State Structure ◽  
Solid State Structure ◽  
Compound C ◽  
Hydrogen Bonded

The solid state structure of the title compound, C17H24N2O4, reveals the imide unit to be planar and perpendicular to the plane of the benzene ring. In the crystal structure, adjacent molecules are hydrogen bonded through the amide unit.

scholarly journals Synthesis and Crystal Structure of 1-Methyl-3-(2-pyridyl)imidazolium Hexafluorophosphate

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
Elango Kandasamy
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Weak Interactions ◽  
Unit Cell ◽  
State Structure ◽  
Unit Cell Parameters ◽  
Monoclinic System ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Cell Parameters

Compound 1-Methyl-3-(2-pyridyl)imidazolium hexafluorophosphate was crystallized in monoclinic system with space group P21/c and unit cell parameters a=7.3740(8) Å, b=15.5931(16) Å, c=10.4787(11) Å, β= 105.3102°, and  ν=1162.12Å3. The obtained solid state structure of 1-Methyl-3-(2-pyridyl)imidazolium hexafluorophosphate shows CH⋯F type weak interactions and was analyzed.

Conformational control through co-operative nonconventional C—H...N hydrogen bonds

2021 ◽  
Vol 77 (8) ◽  
Author(s):  
Eric Bosch ◽  
Nathan P. Bowling ◽  
Shalisa M. Oburn
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Surface Analysis ◽  
Electrostatic Potential ◽  
Molecular Electrostatic Potential ◽  
Hirshfeld Surface ◽  
Design Synthesis ◽  
Synthesis And Crystal Structure

We report the design, synthesis, and crystal structure of a conjugated aryleneethynyl molecule, 2-(2-{4,5-dimethoxy-2-[2-(2,3,4-trifluorophenyl)ethynyl]phenyl}ethynyl)-6-[2-(pyridin-2-yl)ethynyl]pyridine, C30H17F3N2O2, that adopts a planar rhombus conformation in the solid state. The molecule crystallizes in the space group P\overline{1}, with Z = 2, and features two intramolecular sp2 -C—H...N hydrogen bonds that co-operatively hold the arylethynyl molecule in a rhombus conformation. The H atoms are activated towards hydrogen bonding since they are situated on a trifluorophenyl ring and the H...N distances are 2.470 (16) and 2.646 (16) Å, with C—H...N angles of 161.7 (2) and 164.7 (2)°, respectively. Molecular electrostatic potential calculations support the formation of C—H...N hydrogen bonds to the trifluorophenyl moiety. Hirshfeld surface analysis identifies a self-complementary C—H...O dimeric interaction between adjacent 1,2-dimethoxybenzene segments that is shown to be common in structures containing that moiety.

Solid state structure of NH-pyrazoles not easily amenable to crystal structure determinations: The case of 3(5)-phenyl-5(3)-methylpyrazole and 3,5-diphenyl-4-methylpyrazole

1995 ◽  
Vol 32 (2) ◽  
pp. 451-456 ◽  
Author(s):  
JosÉ Elguero ◽  
Nadine Jagerovic ◽  
ConcepciÓN Foces-Foces ◽  
Félix H. Cano ◽  
MarÍA Victoria Roux ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
State Structure ◽  
Solid State Structure ◽  
Structure Determinations
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