Facile Metal-Directed Synthesis and Crystal Structure of a New Amino Acid Ester, Methyl 3-[(2-Aminoethyl)amino]-2-[(2-aminoethyl)aminomethyl]propionate, as the Copper(II) Complex

1990 ◽  
Vol 43 (2) ◽  
pp. 399 ◽  
Author(s):  
PV Bernhardt ◽  
GA Lawrance ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Amino Acid ◽  
Acid Ester ◽  
Copper Ion ◽  
Diethyl Malonate ◽  
Amino Acid Ester ◽  
Monoclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Directed Synthesis

Condensation of bis (ethane-1,2-diamine) copper(II) perchlorate with formaldehyde and diethyl malonate in basic methanol generates the new amino acid ester complex (ethyl hydrogen bis [(2-aminoethyl ) aminomethyl ] malonate )copper(II) perchlorate, [Cu(1)] (ClO4)2. Base- catalysed ester hydrolysis and decarboxylation in methanol of[Cu(1)]2+ yields, with reesterification, (methyl 3-[(2-aminoethy )amino]-2-[(2-aminoethyl) aminomethyl ]propionate)copper(II) perchlorate, [Cu(2)](ClO4)2. This complex crystallizes in the monoclinic space group P21/c, a 12.763(6), b 9.176(2), c 16.32(2)Ǻ, β 112.49 (6)°, Z 4, R 0.054 for 2626 independent 'observed' reflections. The copper ion lies in a near plane of four nitrogens with perchlorates occupying axial sites.

Synthese, Kristallstruktur und Konformation von N-Acetyl-Cα,α-diethylglycin/Synthesis and Crystal Structure of N-Acetyl-Cα,α-diethylglycine

1992 ◽  
Vol 47 (1) ◽  
pp. 90-92 ◽  
Author(s):  
Zdzisław Gałdecki ◽  
Bernard Luciak ◽  
Adam S. Redliński ◽  
Krzysztof Kaczmarek ◽  
Mirosław T. Leplawy
Keyword(s):  
Crystal Structure ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Free Amino ◽  
Direct Methods ◽  
Monoclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Extended Conformation ◽  
Fully Extended Conformation

The compound CH3-CO-NH-C(C2H5)2-COOH was synthesized from the corresponding free amino acid. N-Acetyl-Cα,α-diethylglycine crystallizes in the monoclinic space group P21/c with a = 13.551(2)Å, b = 11.110(3)Å, c = 13.569(3)Å, β = 111.54(2)°, Z = 8 , D = 1.21 g/cm3. This structure was solved by direct methods and refined to R = 0.084. N-Acetyl-Cα,α-diethylglycine shows a fully extended conformation in its -N H-C(C2H5)2-CO- part.

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.

Synthesis of a Cis-N2s2 Donor Macrocycle by Metal-Directed Condensation of Formaldehyde, Nitroethane and a Diaminodithiaalkane - Crystal-Structure of the (6-Methyl-6-Nitro-1,11-Dithia-4,8-Diazacyclotetradecane)-Copper(II) Perchlorate Product

1988 ◽  
Vol 41 (5) ◽  
pp. 773 ◽  
Author(s):  
P Comba ◽  
GA Lawrance ◽  
M Rossignoli ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Structural Properties ◽  
Copper Ion ◽  
Macrocyclic Complex ◽  
High Yield ◽  
Monoclinic Space Group ◽  
Space Group ◽  
Complex Ion ◽  
Perchlorate Salt

Reaction of (3,7-dithianonane-1,9-diamine)copper(II) ion with nitroethane and formaldehyde in basic methanol gives the macrocyclic complex ion (6-methyl-6-nitro-1,II-dithia-4,8- diazacyclotetradecane )copper(II) in high yield. The complex as the perchlorate salt crystallizes in the monoclinic space group P21/n, a 15.008(5), b 8.606(3), c 17.967(4)Ǻ, β 113.79(2)�. The copper ion lies in a square plane of two nitrogen (average Cu-N 2.02 Ǻ) and two thioether (average Cu-S 2.295 Ǻ) donors, with perchlorate oxygens (Cu-O 2.46 and 2.70 Ǻ) in axial sites. Physical and structural properties of the CuIII complexes of the 14-membered cis-N2S2 macrocycle and the known analogous 14-membered N4-donor macrocycle 6-methyl-6-nitro-1,4,8,11- tetraazacyclotetradecane are compared.

scholarly journals Synthese und Kristallstruktur eines Alkali-Erdalkali-Kupfer-Halogeno-Oxovanadats: KBaCuV2O7Cl / Synthesis and Crystal Structure of an Alkaline Alkaline-Earth Halide Oxide of Copper and Vanadium: KBaCuV2O7Cl

1994 ◽  
Vol 49 (3) ◽  
pp. 355-359 ◽  
Author(s):  
F.-D. Martin ◽  
H. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Alkaline Earth ◽  
Copper Ion ◽  
Tetragonal Symmetry ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Symmetry Space ◽  
Symmetry Space Group

Abstract Single crystals of KBaCuV2O7Cl have been prepared by a flux technique and investigated by X-ray analysis. The compound crystallizes with tetragonal symmetry, space group C24v-P4 bm, a = 8.8581, c = 5.4711 Å, Z = 2. The crystal structure shows Cu2+ within a one sided strongly distorted CuO4Cl2 octahedron. The copper ion is shifted towards the nearer Cl- neighbour to form a CuO4Cl square pyramid. Two VO4 tetrahedra are connected to give stretched V2O7 double tetrahedra, and linked in planes via the oxygen corners of the CuO4Cl pyramids. The crystal structure and the structure of the complex BaO8Cl2 polyhedron are discussed.

Synthese und Kristallstruktur von [l,3-Bis(4-ethoxyphenyl)triazenido]pyridino-silber(I), einem dimeren Komplex mit kurzem Silber-Silber-Kontakt / Synthesis and Crystal Structure of [1,3-Bis(4-ethoxyphenyl)triazenido]pyridino Silver(I), a Dimeric Complex with a Short Silver-Silver Contact

1988 ◽  
Vol 43 (5) ◽  
pp. 525-528 ◽  
Author(s):  
Edmund Hartmann ◽  
Joachim Strähle
Keyword(s):  
Crystal Structure ◽  
Monoclinic Space Group ◽  
Dimeric Complex ◽  
Pyridine Ligand ◽  
Centrosymmetric Dimer ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Silver Silver ◽  
Membered Heterocycle

1,3-Bis(4-ethoxyphenyl)triazenido silver(I) (1) is obtained from equimolar amounts of the triazenido anion and AgNO3 in THF/CH3CN. 1 forms in pyridine the dimer [Ag(EtOC6H4NNNC6H4OEt)·py]2 (2) which crystallizes as yellow pyridine solvate 2·2 py in the monoclinic space group P21/n and a = 1067.1(7), b = 1764.5(9), c = 1373.0(9) pm, β = 106.46(7)°, Z = 2. In the centrosymmetric dimer 2, two triazenido ligands bridge two Ag(I) atoms with their atoms N1 and N3 forming an eight-membered heterocycle Ag2N6 with a short Ag-Ag interaction of 272.6 pm. To each Ag atom an additional pyridine ligand is weakly coordinated with a distance Ag-N40 = 245.5 pm. The bond axis N1 - Ag-N3′ within the heterocycle is not linear (158.5°). The Ag-N distances to the N-atoms of the triazenido ligand are 217.6 and 218.5 pm.

Synthese und Kristallstruktur von [Hg2(p-SC6H4NO2)]NO3 / Synthesis and Crystal Structure of [Hg2(p-SC6H4NO2)]NO3

1990 ◽  
Vol 45 (8) ◽  
pp. 1193-1196 ◽  
Author(s):  
Klaus Brodersen ◽  
Axel Knörr
Keyword(s):  
Crystal Structure ◽  
Chain Structure ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Nitrate Ions ◽  
R Value ◽  
A Chain

[Hg2(p-SC6H4NO2)]NO3 is formed by the reaction of p-nitrothiophenol with dimercury(I)-dinitrate in methanol. It crystallizes in the monoclinic space group P21/n with a = 1175.5(9) pm, b = 1079.8(8) pm, c = 876.2(8) pm, β = 110.74(4)° and Z = 4. The crystal structure has been determined by X-ray diffraction and refined to an R-value of 0.052. The results show that the compound exists as a chain structure of [—®S(C6H4NO2)— Hg— Hg—]n with nitrate ions connecting the chains.

Synthese und Kristallstruktur von (Cyclopentadienyl)(dicarbonyl)(1,5-di-/Molyl-pentaazadienido)molybdän, (Cp)Mo(CO)2(tolN5tol)/ Synthesis and Crystal Structure of (Cyclopentadienyl)(dicarbonyl)(1,5-di-p-tolyl-pentaazadienido)molybdenum, (Cp)Mo(CO)2(tolN5tol)

1988 ◽  
Vol 43 (8) ◽  
pp. 1029-1032 ◽  
Author(s):  
Johannes Beck
Keyword(s):  
Crystal Structure ◽  
Nitrogen Atom ◽  
Metal Atom ◽  
Chelate Ring ◽  
Lattice Parameters ◽  
Monoclinic Space Group ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Membered Chelate Ring

Abstract(Cp)Mo(CO)2(tolN5tol) is formed in the reaction of (Cp)Mo(CO)3Cl with tolNN(NH)NNtol and NaOH in ethanol. It forms red platelike crystals from THF/hexane which crystallize in the monoclinic space group P21/n with the lattice parameters a = 765.6(2), b = 2372.3(3), c = 1149.4(2) pm, β = 97.06(2)°, Z = 4. The structure consists of monomeric complexes. The pentaazadienido ligand chelates with its nitrogen atoms N1 and N3 the Mo atom of a (Cp)Mo(CO)2 unit. The nitrogen atom N5 is not coordinated to the metal atom. Although asymmetrically bonded, the all trans N5 zig zag chain is planar. The N -N distances in the four membered chelate ring are nearly equal (N1 - N2 = 131.0 and N2 - N3 = 132.6 pm)

scholarly journals Synthesis and crystal structure of Na4Ni7(AsO4)6

2016 ◽  
Vol 72 (5) ◽  
pp. 632-634 ◽  
Author(s):  
Rénald David
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Monoclinic Space Group ◽  
Site Symmetry ◽  
Asymmetric Unit ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Ceramic Synthesis ◽  
The One

The title compound, tetrasodium heptanickel hexaarsenate, was obtained by ceramic synthesis and crystallizes in the monoclinic space groupC2/m. The asymmetric unit contains seven Ni atoms of which two have site symmetry 2/mand three site symmetry 2, four As atoms of which two have site symmetrymand two site symmetry 2, three Na atoms of which two have site symmetry 2, and fifteen O atoms of which four have site symmetrym. The structure of Na4Ni7(AsO4)6is made of layers of Ni octahedra and As tetrahedra assembled in sheets parallel to thebcplane. These layers are interconnected by corner-sharing between NiO6octahedra and AsO4tetrahedra. This linkage creates tunnels running along thecaxis in which the Na atoms are located. This arrangement is similar to the one observed in Na4Ni7(PO4)6, but the layers of the two compounds are slightly different because of the disorder of one of the Ni sites in the structure of the title compound.

scholarly journals Synthesis and Crystal Structure ofN-Dichloroacetyl-3,4-dihydro-3-methyl-6-chloro-2H-1,4-benzoxazine

2015 ◽  
Vol 2015 ◽  
pp. 1-5
Author(s):  
Shuang Gao ◽  
Hai-Tao Qu ◽  
Fei Ye ◽  
Ying Fu
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Title Compound ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Compound C

A new compound,N-dichloroacetyl-3,4-dihydro-3-methyl-6-chloro-2H-1,4-benzoxazine, was synthesized and characterized. The crystal structure of the title compound (C11H10Cl3NO2,Mr=294.55) has been determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space groupP21/c, witha=6.7619(14),b=24.866(5),c=9.737(3) Å,α=90.00,β=130.982(18),γ=90.00°,V=1235.9(5) Å3,Z=4,Dx=1.583 Mg/cm3,λ(Mo  Ka)=0.71073 Å,F(000)=600,μ=0.729 mm−1,R=0.0476, andwR=0.1274for 2217 reflections withI>2σ(I).

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.

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