Synthesis and crystal structure of dinitroxyl crown ether biradical with indole groups in the side chains

1996 ◽  
Vol 45 (4) ◽  
pp. 875-879 ◽  
Author(s):  
A. B. Shapiro ◽  
V. I. Suskina ◽  
V. N. Khrustatev ◽  
S. V. Lindeman ◽  
Yu. T. Struchkov
Keyword(s):  
Crystal Structure ◽  
Crown Ether ◽  
Side Chains ◽  
Synthesis And Crystal Structure

ChemInform Abstract: Synthesis and Crystal Structure of Dinitroxyl Crown Ether Biradical (V) with Indole Groups in the Side Chains.

ChemInform ◽  
2010 ◽  
Vol 27 (42) ◽  
pp. no-no
Author(s):  
A. B. SHAPIRO ◽  
V. I. SUSKINA ◽  
V. N. KHRUSTALEV ◽  
S. V. LINDEMAN ◽  
YU. T. STRUCHKOV
Keyword(s):  
Crystal Structure ◽  
Crown Ether ◽  
Side Chains ◽  
Synthesis And Crystal Structure

Synthese und Kristallstruktur von [VCl2(15-Krone-5)]+[VOCl4]- / Synthesis and Crystal Structure of [VCl2(15-Crown-5)]+[VOCl4]-

1990 ◽  
Vol 45 (10) ◽  
pp. 1393-1397 ◽  
Author(s):  
Gerlinde Frenzen ◽  
Werner Massa ◽  
Thilo Ernst ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Ir Spectroscopy ◽  
Crown Ether ◽  
Single Crystals ◽  
Structure Determination ◽  
Acetonitrile Solution ◽  
Tetragonal Symmetry ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Ether Molecule

[VCl2(15-crown-5)]+[VOCl4]- has been prepared by the reaction of VCl4 with 15-crown-5 in acetonitrile solution in the presence of water, forming black-brown single crystals. They were characterized by IR spectroscopy as well as by an X-ray structure determination. Space group Pnma, Z = 4, 1530 observed unique reflexions, R = 0.052. Lattice dimensions at -120°C: a = 1128.5(4), b = 1063.3(3), c = 1680(1) pm. The compound forms ions, in which the cation contains vanadium(+III), which is seven coordinate by the five oxygen atoms of the crown ether molecule and by two chlorine atoms in axial positions of a pentagonal bipyramide. The [VOCl4]- anion contains vanadium (+V) with approximately tetragonal symmetry

Synthesis and crystal structure of rubidium hydrogen oximate complexes with 18-crown-6: is it possible to reach a perfect fit of the rubidium atom inside the crown ether cavity?

1998 ◽  
Vol 268 (1) ◽  
pp. 93-101 ◽  
Author(s):  
Konstantin V. Domasevitch ◽  
Vera V. Ponomareva ◽  
Eduard B. Rusanov ◽  
Thomas Gelbrich ◽  
Joachim Sieler ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Crown Ether ◽  
Synthesis And Crystal Structure ◽  
Rubidium Atom

Two-dimensional crown ether complex. Synthesis and crystal structure of [Na(N15C5)]2[Cu(mnt)2]

2005 ◽  
Vol 35 (5) ◽  
pp. 345-350 ◽  
Author(s):  
Xi-Ke Gao ◽  
Jian-Min Dou ◽  
Da-Cheng Li ◽  
Feng-Ying Dong ◽  
Da-Qi Wang
Keyword(s):  
Crystal Structure ◽  
Crown Ether ◽  
Two Dimensional ◽  
Synthesis And Crystal Structure ◽  
Crown Ether Complex ◽  
Ether Complex

Synthese und Kristallstrukturanalyse eines 2,4-Diaryl-2,3-dihydro-1H-1,5-benzodiazepins / Synthesis and Crystal Structure Analysis of a 2,4-Diaryl-2,3-dihydro-1H-1,5-benzodiazepine

2004 ◽  
Vol 59 (1) ◽  
pp. 73-76 ◽  
Author(s):  
Angelina Hormaza ◽  
Dieter Schollmeyer ◽  
Herbert Meier
Keyword(s):  
Crystal Structure ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
Ring System ◽  
Side Chains ◽  
Synthesis And Crystal Structure

AbstractThe enone unit of chalcones is a synthetically valuable substructure for the formation of heterocycles. Whereas propoxy groups as solubilizing side chains on the phenyl groups do not much affect the generation of pyrazole and pyridine rings, they reduce significantly the yield of the diazepine ring system 4. We attribute this effect to the large twist angles between the ring planes, which are demonstrated by a crystal structure analysis.

scholarly journals Synthese und Kristallstruktur von [Na(15-Krone-5)]2S6 / Synthesis and Crystal Structure of [Na(15-crown-5)]2S6

1992 ◽  
Vol 47 (8) ◽  
pp. 1063-1066 ◽  
Author(s):  
Alfred-Dirk Bacher ◽  
Ulrich Müller
Keyword(s):  
Crystal Structure ◽  
Crown Ether ◽  
Crystal Data ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Ether Molecule

[Na(15-crown-5)]2S6 was obtained from Na2S4 und 15-crown-5 in acetonitrile. Its crystal structure was determined by X-ray diffraction with 2968 observed reflexions, R = 0.119. Crystal data: a = 861.4(9), b = 1006(1), c = 2097(1) pm, α = 89.7(1), β = 100.20(8), γ = 114.6(1)°, Ζ = 2, space group Ρ 1̄. The chain-like S62- ion has transoid conformations, each of its terminal atoms is in contact with one Na+ ion which in turn is coordinated with one crown ether molecule.

Synthesis and Crystal Structure of a Caesium Hydrogen Benzoylcyanoximate Complex with 18-Crown-6: Cs(18-Crown-6){H(L)2}

1997 ◽  
Vol 52 (8) ◽  
pp. 901-905 ◽  
Author(s):  
Vera V Ponomareva ◽  
Victor V Skopenko ◽  
Konstantin V Domasevitch ◽  
Joachim Sieler ◽  
Thomas Gelbrich
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Crown Ether ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
The Mean ◽  
Cyano Groups ◽  
Oxygen Atoms

Abstract The caesium hydrogen benzoylcyanoximate (L-) complex with 18-crown-6 of composition Cs(18-crown-6){H(L)2} has been prepared and studied by means of X-ray diffraction [monoclinic, space group P21/n, with a = 9.906(1), b = 18.387(3), c = 18.855(3)Å, β = 90.13(1)°, V = 3434.3(9) Å, Z = 4; final R1 = 0.043 for the 6431 independent reflections used. The lattice consists of Cs(18-crown-6)+ cations and complex hydrogen oximate anions {H(L)2}-, formed via strong hydrogen bonding between the oxygen atoms of nitroso-groups [O - - - O ca. 2.456(5)Å]. The caesium atom deviates by 1.492(3) Å from the mean plane of the oxygen atoms of the macrocyclic ether (dominant orientation of disordered ligand, 60%) and adopts a typical “sunrise coordination” [Cs-O (ether) 3.040(9)-3.312(7) Å]. The hydrogen oximate groups are bonded to the metal center only on one side of the crown ether plane via the oxygen atoms of nitroso-groups and the nitrogen atoms of cyano groups (Cs-O ca. 3.040(9), 3.312(7) Å; Cs-N ca. 3.469(5), 3.679(6) Å). The coordination polyhedron of Cs+ can be described as a distorted bicapped tetragonal prism.

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