scholarly journals The Synthesis and Crystal Structure of N-tert-Butyl-3-(tert-butylimino)-2-nitropropen-1 -amine

1993 ◽  
Vol 48 (8) ◽  
pp. 1138-1142 ◽  
Author(s):  
Daryl L. Ostercamp ◽  
Lisa M. Preston ◽  
Kay D. Onan
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Solid State ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Tert Butyl ◽  
Intramolecular Hydrogen ◽  
Hydrolysis Of

The unit cell of N-tert-butyl-3-(tert-butylimino)-2-nitropropen-1-amine (4) is monoclinic, space group P21/C, with a = 9.669(4), b = 16.415(6), c = 17.341 (7) Å, and Z = 4. Hydrolysis of 4 leads to (E)-3-(N-tert-butylamino)-2-nitro-2-propenal (5), whose unit cell is monoclinic, space group P21/n, with a = 6.821(1), b = 20.707(6), c = 6.303(1)Å, and Z = 4. Compounds 4 and 5 both possess C2 symmetry in the solid state, their “U-shaped” conjugated cores being essentially planar. In each case this planarity is enforced by an intramolecular hydrogen bond.

Synthesis and Crystal Structure of 5,10,15,20-Tetrakis(3,5-dinitrophenyl)porphyrin

1998 ◽  
Vol 02 (05) ◽  
pp. 391-396 ◽  
Author(s):  
P. BHYRAPPA ◽  
K. S. SUSLICK
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Structure Data ◽  
Crystal Structure Data ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
State Structure ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray

The synthesis, characterization and crystal structure of the octanitro-substituted porphyrin 5,10,15,20-tetrakis(3,5-dinitrophenyl)porphyrin, H 2 T (3,5- DNP ) P , are described. The solid state structure has two porphyrins in the unit cell with eight pyridine solvates and is made up from columnar arrays of the porphyrins. X-ray crystal structure data: monoclinic, space group P1 21/n1, a = 14.9996(9) Å, b = 8.2489(5) Å, c = 24.818(2) Å, α = 90 °, β = 104.172(1) °, γ = 90 °, V = 2977.3(3) Å3, dcalc = 1.440 g m-3, Z = 2.

Notizen: Eine neue bicyclische Zinn-Selen-Verbindung. Synthese und Kristallstruktur von [{Cp(CO)2Fe}3ClSn3Se4] / A New Bicyclic Tin Selenium Compound. Synthesis and Crystal Structure of [{Cp(CO)2Fe}3ClSn3Se4]

1993 ◽  
Vol 48 (7) ◽  
pp. 1009-1012 ◽  
Author(s):  
Kurt Merzweiler ◽  
Harald Kraus
Keyword(s):  
Crystal Structure ◽  
Structure Determination ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
Selenium Compound ◽  
Space Group ◽  
X Ray ◽  
Lattice Constants ◽  
Compound Synthesis

[{Cp(CO)2Fe}SnCl3] reacts with Na2Se in THF to form the compound [{Cp(CO)2Fe}3ClSn3Se4] 1. 1 crystallizes in the monoclinic space group P21/n with 4 formula units per unit cell. The lattice constants are α = 1435.2(7), b = 1124.4(4), c = 1972.7(12) pm, β = 94.59(4)°. According to the X-ray structure determination 1 contains a bicyclic Sn3Se4 framework.

Darstellung und Kristallstruktur von [(Me3Si)2CH(i-Pr)InCl]2 / Synthesis and Crystal Structure of [(Me3Si)2CH(i-Pr)InCl]2

1991 ◽  
Vol 46 (11) ◽  
pp. 1539-1543 ◽  
Author(s):  
Bernhard Neumüller
Keyword(s):  
Crystal Structure ◽  
Mass Spectrometry ◽  
Solid State ◽  
Title Compound ◽  
Unit Cell ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Cell Parameters

The title compound 1 has been prepared by the reaction of i-PrInCl2 with LiCH(SiMe3)2 in diethylether at -30 °C. The colorless substance 1 was characterized by NMR, IR, and RE spectroscopy, as well as by mass spectrometry. 1 is dimer in solution and the solid state and crystallizes in the space group P21/c with the cell parameters a = 1206.4(3) pm, b = 905.7(2) pm, c = 1591.2(5) pm, and β = 101.18(2)°. The unit cell contains two centrosymmetrical dimeric molecules.

Synthesis and Crystal Structure of Tetra(n-butyl)ammonium Hydroxomethoxophthalocyaninato(2-)iridate(III) Methanol Solvate

1999 ◽  
Vol 03 (03) ◽  
pp. 169-171 ◽  
Author(s):  
HEINER HÜCKSTÄDT ◽  
HEINER HOMBORG
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Ammonium Hydroxide ◽  
Complex Salt ◽  
Strong Hydrogen Bond ◽  
Monoclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Cell Parameters

Bis(phthalocyaninato(2-)iridium(II)) reacts in methanol with excess tetra(n-butyl)ammonium hydroxide to yield tetra(n-butyl)ammonium hydroxomethoxophthalocyaninato(2-)iridate(III). The complex salt crystallizes as a methanol solvate in the monoclinic space group P21/n(No. 14) with cell parameters a = 12.510(1) Å, b = 19.561(3) Å, c = 18.489(2) Å, = 90.42(1) °, Z = 4. The Ir atom is hexacoordinated with four isoindole N atoms ( N iso ) of the severely saddled pc ligand and two O atoms of the hydroxide ( O 1) and methoxide ( O2 ) ligand respectively in a mutual trans arrangement. The average Ir-N iso distance is 1.981(5) Å, the Ir-O1 distance 2.038(7) Å and the Ir-O2 distance 2.061(6) Å. The O atom of the solvate ( O3 ) is bound to O2 by a strong hydrogen bond with an O2 - O3 distance of 2.60(1) Å.

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.

The Crystal Structure of Bis(2,2′:6′,2″-terpyridine)nickel(II) Perchlorate Hydrate

1995 ◽  
Vol 48 (7) ◽  
pp. 1373 ◽  
Author(s):  
AT Baker ◽  
DC Craig ◽  
AD Rae
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Single Crystal ◽  
Least Squares ◽  
Axial Compression ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
Octahedral Symmetry ◽  
Space Group ◽  
X Ray

The crystal structure of bis (2,2′:6′,2″-terpyridine)nickel(II) bis (perchlorate) hydrate has been determined by single-crystal X-ray diffractometry . The compound is monoclinic, space group P21, with two molecules in a unit cell of dimensions a 8.827(4), b 8.910(2), c 20.148(9) Ǻ, β 98.71(2)°. The structure was refined by least-squares to a residual of 0.065 for 2184 observed reflections. The compound is found to be isomorphic with the iron(II) analogue previously reported: the cation has approximate D2d symmetry, with the main distortion from octahedral symmetry being an axial compression. Both the solid state reflectance and solution spectra have been measured and some significant differences are noted.

Synthese und Kristallstruktur von Bromotriphenylphosphoniumtribromid, [(C6H5)3PBr]Br3 / Synthesis and Crystal Structure of Bromotriphenylphosphonium Tribromide, [(C6H5)3PBr]Br3

1993 ◽  
Vol 48 (3) ◽  
pp. 258-262 ◽  
Author(s):  
H. Vogt ◽  
S. I. Trojanov ◽  
V. B. Rybakov
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Solid State ◽  
Title Compound ◽  
Crystal And Molecular Structure ◽  
Monoclinic Space Group ◽  
Tetrahedral Geometry ◽  
Synthesis And Crystal Structure ◽  
Space Group

Bromotriphenylphosphonium tribromide, [(C6H5)3PBr]Br3, has been prepared by the reaction of triphenylphosphine with bromine in dichloromethane. Light-brown crystals are obtained by recrystallization from the same solvent.The crystal and molecular structure of the title compound has been determined. The crystals are monoclinic, space group P21/c, Z = 8; a = 1917.1(8), b = 1182.2(9), c = 1823.5(4) pm, β = 108.34(2)°. R = 0.056 (Rw = 0.063) for 1813 reflections with I ≥ 3σ(I). In the solid state the title compound exists as discrete monomeric (C6H5)3PBr+ and Br3⁻ ions with two crystallographically independent ions of each sort. The cations have a slightly irregular tetrahedral geometry around the P atom. The tribromide anions are nearly symmetrical and slightly bent.

Synthese und Kristallstruktur von Tribrommethyltriphenylphosphonium-bromid und Bis(tribrommethyltriphenylphosphonium)-tribroniid-bromid / Synthesis and Crystal Structure of Tribromomethyltriphenylphosphonium Bromide and Bis(tribromomethyltriphenylphosphonium) Tribromide Bromide

1995 ◽  
Vol 50 (2) ◽  
pp. 223-228 ◽  
Author(s):  
H. Vogt ◽  
C. Frauendorf ◽  
A. Fischer ◽  
P. G. Jones
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Red Light ◽  
Monoclinic Space Group ◽  
Reaction Conditions ◽  
Tetrahedral Geometry ◽  
Triclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
Space Group

Tribromotriphenylphosphonium bromide 1 has been prepared by the reaction of triphenylphosphine with tetrabromomethane in dichloromethane. Colourless crystals were obtained by recrystallization from the same solvent. The light-sensitive crystals change colour to yellow. The crystals are triclinic, space group P1̄ , Z = 4, a = 1008.6(5), b = 1357.8(6), c = 1560.7(7) pm, α = 106.61(4), β = 91.80(4), γ = 93.88(4)°. In the solid state there are discrete monomeric (C6H5)3PCBr3+ cations and Br- anions. The cation has a slightly irregular tetrahedral geometry around the P atom. The crystals contain one molecule CH2C12 per four molecules (C6H5)3PCBr4.Bis(tribromomethyltriphenylphosphonium) tribromide bromide 2 can be obtained as a byproduct of the reaction of (C6H5)3P with CBr4 by variation of the reaction conditions. Red light-stable crystals are obtained by recrystallization from CH2C12. The crystals are monoclinic, space group C2/c, Z = 8, a = 2231.5(7), b = 1532.7(7), c = 1556.9(6) pm, β = 129.69(2)°. In the solid state bis(tribromomethyltriphenylphosphonium) tribromide bromide exists as discrete monomeric (C6H5)3PCBr3+ cations and Br- and Br3- anions. The Br anion and the central Br of Br3- anion lie on crystallographic twofold axes. The cation has also a slightly irregular tetrahedral geometry around the P atom, with a long P-CBr3 bond.

Kristallstruktur von Bis(N.N′-bis(8-chinoyl)äthylendiaminato)nickel(II) / Crystal Structure of Bis(N,N′-bis(8-chinoyl)ethylenediaminato)nickel(II)

1977 ◽  
Vol 32 (2) ◽  
pp. 131-133 ◽  
Author(s):  
H. Endres ◽  
H. J. Keller ◽  
A. Poveda
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Least Squares ◽  
Title Compound ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
Space Group ◽  
Cell Dimensions ◽  
Planar Molecules ◽  
Unit Cell Dimensions

The title compound NiC20H16N4 crystallizes in the monoclinic space group Ρ21/a with unit cell dimensions a = 12.07(2) Å, b= 10.712(4) Å, c = 13.50(3) Å, β= 113.1(1)°. The structure was refined by a blockmatrix least squares procedure to R = 0.126, based on 1258 observed intensities. The planar molecules form centro-symmetric dimers in the solid state with interplane distances of 3.3 A.

Primäre und sekundäre Ethyl-und i-Propylsulfoniumsalze sowie Kristallstruktur von i-C3H7SH2+SbF6- [1]

1996 ◽  
Vol 51 (2) ◽  
pp. 277-285
Author(s):  
Rolf Minkwitz ◽  
Ulrike Lohmann ◽  
Hans Preut
Keyword(s):  
Crystal Structure ◽  
Structure Analysis ◽  
Bond Distance ◽  
Crystal Structure Analysis ◽  
Unit Cell ◽  
Monoclinic Space Group ◽  
Spectroscopic Methods ◽  
Sulfonium Salt ◽  
Space Group

Abstract The synthesis of salts of the type RnSH3-n+MF6- (R = C2H5, i-C3H7; n = 1, 2; M = As, Sb) by protonation of the corresponding thiols and sulfides in the superacid systems HF/MF5 is reported. The salts have been characterized by vibrational and NMR spectroscopic methods. Isopropylsulfonium hexafluoroantimonate is the first known example of a sulfonium salt, for which a SH bond distance has been determined by a crystal structure analysis, i-C3H7SH2+SbF6- crystallizes in the monoclinic space group P21/m with a = 568.0(4), b = 801.1(6), c = 1019.7(8) pm, β = 82.63(6) °, with two formula units per unit cell.

Sign in / Sign up

Export Citation Format

Share Document