The structure of dichloro(L-histidine)copper(II)

1982 ◽  
Vol 35 (8) ◽  
pp. 1581 ◽  
Author(s):  
K Colyvas ◽  
HR Tietze ◽  
SKJ Egri
Keyword(s):  
Hydrogen Bonding ◽  
Nitrogen Atom ◽  
Oxygen Atom ◽  
Least Squares ◽  
Copper Atom ◽  
Title Compound ◽  
Amino Nitrogen ◽  
Chlorine Atoms ◽  
X Ray ◽  
X Ray Crystallography

The structure of the orthorhombic form of the title compound has been determined by X-ray crystallography. The space group was found to be P212121 (No.19,D24 = V4) with a 10.01(5), b 5.944(6), c 17.5469(7) � and Z 4. The structure was refined by least squares to R 0.0614. It consists of chains of molecules with the carboxy oxygen atom, the amino nitrogen atom and the two chlorine atoms forming an approximate square plane about the copper atom, with two bridging chlorine atoms from two adjacent molecules completing a distorted octahedron. Extensive hydrogen bonding links the chains together.

scholarly journals Die Kristallstruktur von Hexa-μ-chloro-μ4- oxo - tetrakis [hexamethy lentetramin - kupfer(II)] , [CU4Cl60(C6H12N4)4] , einem Kupfer(II)-Komplex mit Berylliumoxoacetat-ähnlicher Struktur / The Crystal Structure of Hexa-μ-chloro-μ4- oxo-tetrakis [hexamethylenetetraminecopper- (II)], [Cu4Cl6O(C6H12N4)4], a Copper(II) Complex with a Structure Related to that of Beryllium Oxoacetate

1982 ◽  
Vol 37 (10) ◽  
pp. 1355-1357 ◽  
Author(s):  
Joachim Pickardt ◽  
Norbert Rautenberg
Keyword(s):  
Crystal Structure ◽  
Nitrogen Atom ◽  
Oxygen Atom ◽  
Single Crystals ◽  
Copper Atom ◽  
Chlorine Atoms ◽  
X Ray

Abstract By reaction of solutions of CuCl2·2H2O and hexamethylenetetramine, C6H12N4, in acetone, a complex [Cu4Cl6O(C6H12N4)] could be obtained as single crystals. An X-ray analysis shows that the complex has a structure related to that of basic beryllium acetate. An oxygen atom is tetrahedrally surrounded by four cop-per atoms which, together with six chlorine atoms, form an adamantane-like core. Each copper atom is bonded via a nitrogen atom to a hexamethylenetetramine molecule.

Notizen: Kristallstruktur von [Cu4OCl6(CH3CN)4] · 2 CH3CN / Crystal Structure of [Cu4OCl6(CH3CN)4] · 2 CH3CN

1990 ◽  
Vol 45 (11) ◽  
pp. 1593-1596 ◽  
Author(s):  
Wolfgang Hiller ◽  
Alfred Zinn ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Oxygen Atom ◽  
Structure Determination ◽  
Ir Spectrum ◽  
Copper Atom ◽  
Title Compound ◽  
Chlorine Atoms ◽  
Space Group ◽  
X Ray ◽  
Distorted Trigonal Bipyramid

The title compound has been prepared by the reaction of CuCl, with hexakis(trimethylsilyl)-benzdiamidine, in boiling acetonitrile in the presence of traces of water, as brown crystals, which were characterized by their IR spectrum as well as by an X-ray structure determination. Space group C 2/c, Z = 4, 2668 observed unique reflexions, R = 0.036. Lattice dimensions at –65 C: a = 879.5(2), b = 2441.1(3), c = 1241.4(3) pm, β = 95.24(3)°. In the structure four copper atoms surround an oxygen atom in a slightly distorted tetrahedral fashion; the chlorine atoms bridge adjacent copper atoms, and each copper atom is thus bound to three chlorine atoms. The nitrogen atoms of the acetonitrile complete the slightly distorted trigonal bipyramid around the copper atoms.

Notizen: Synthesis and Crystal Structure of the Hydrogen Bonded Complex of Tri-paratoluidylphosphazenyl Oxide with Ethyl Alcohol

1976 ◽  
Vol 31 (9) ◽  
pp. 1295-1296 ◽  
Author(s):  
T. Stanley Cameron ◽  
M. Gerard Magee ◽  
Samuel Mclean
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Oxygen Atom ◽  
Ethyl Alcohol ◽  
Title Compound ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Bond Lengths ◽  
X Ray Crystallography ◽  
Phosphoryl Oxygen

The title compound was synthesised and its structure determined by X-ray crystallography. The structure contains a hydrogen bond between the OH group of the alcohol and the phosphoryl oxygen atom. The P–N bond lengths are significantly different and the differences can be attributed to varying ρπ—dπ interactions along the bonds.

Crystal structure of Bis(O-ethylxanthato)-1,10-phenanthrolinecadmium(II)

1976 ◽  
Vol 29 (4) ◽  
pp. 739 ◽  
Author(s):  
CL Raston ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Title Compound ◽  
Crystallographic Axis ◽  
Full Matrix ◽  
X Ray ◽  
X Ray Crystallography ◽  
Phenanthroline Ligand

The crystal structure of the title compound, [Cd(C12H8N2)(CS2OEt)2], has been determined by X-ray crystallography using diffractometer data at 295 K and refined by full matrix least squares to a residual of 0.06 for 1350 'observed' reflections. Crystals are orthorhombic, P bcn, a = 14.870(4), b = 14.549(8), c = 10.249(1) �, Z = 4. The molecule lies on a twofold crystallographic axis; the phenanthroline ligand is symmetrically bidentate [Cd-N, 2.386(8) �], while the ethylxanthateligand is somewhat asymmetric [Cd-S, 2.647(3), 2.727(3)4 with a correspondingly asymmetric C-S geometry [C-S, 1.72(1), 1.66(1) �].

Trimethyl(3-Oxido-1-Oxoinden-2-Yl)Ammonium, a New 1,4-Dipolar Ylide

1986 ◽  
Vol 39 (1) ◽  
pp. 183 ◽  
Author(s):  
E Horn ◽  
GP Jones ◽  
RH Prager ◽  
MR Snow ◽  
AD Ward
Keyword(s):  
Least Squares ◽  
Title Compound ◽  
Dimethyl Acetal ◽  
Chemical Degradation ◽  
Monoclinic Space Group ◽  
Full Matrix ◽  
Space Group ◽  
X Ray ◽  
X Ray Crystallography

Reaction of isobenzofuran-1(3H)-one ( phthalide ) and its derivatives with dimethylformamide dimethyl acetal in the presence of base gives small amounts (c. 10%)1 of the ylid trimethyl (3-oxido-1-oxoinden-2- yl )ammonium (3). The same compound is formed in higher yield from the corresponding 3-dimethylaminomethyleneisobenzofuran-1(3H)-one. Support for this structure comes from chemical degradation and its mode of synthesis, but relies mainly on X-ray crystallography. The title compound crystallizes as clear prisms in the monoclinic space group P21/n with a 15.992(2), b 9.329(4), c 7.112(3)Ǻ, β 90.15(3)° and Z 4. The structural final refinement of a full-matrix least-squares calculation converged with R 0.044 and Rw 0.045.

Verfeinerung der Kristallstruktur von Tripalladium-di-tetrathiophospliat Pd3(PS4)2 Refinement of the Crystal Structure of Tripalladium-di-tetrathiophosphate Pda3(PS4)2

1983 ◽  
Vol 38 (4) ◽  
pp. 426-427 ◽  
Author(s):  
Arndt Simon ◽  
Karl Peters ◽  
Harry Hahn
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Title Compound ◽  
Type Structure ◽  
Tetrahedral Symmetry ◽  
X Ray ◽  
X Ray Crystallography ◽  
Planar Environment

Abstract The structure of the title compound has been determined by X-ray crystallography. The title compound is synthesized from the elements at 600 °C. Its crystal structure, derived from powder data [3] is refined by single crystal diffractometer data. The structure is trigonal (P3̅ml, α = 684.1(1), c = 724.4(1) pm); Pd2+ cations and PS43- anions form a network with an anti-Claudetite (AS2O3) type structure. The PS4 units are distinctly distorted from ideal tetrahedral symmetry. The Pd atoms have a planar environment of 4 S atoms.

Systhesis, Characterization and Spectroscopic Properties of (2E,6E)-2,6-Bis(2,3,4-tri-methoxy-benzylidene)cyclohexanone

2011 ◽  
Vol 396-398 ◽  
pp. 2338-2341
Author(s):  
Xing Chuan Wei ◽  
Zhi Li Liu ◽  
Kun Zhang ◽  
Zhi Yun Du ◽  
Xi Zheng
Keyword(s):  
Crystal Structure ◽  
Acetic Acid ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Spectroscopic Properties ◽  
Spectral Studies ◽  
Double Bonds ◽  
X Ray ◽  
Π Interactions ◽  
X Ray Crystallography

In this paper, (2E,6E)-2,6-Bis(2,3,4-tri-methoxy -benzylidene)cyclohexanone (omitted as tmbcho) (1) was obtained by the reaction of acetic acid, tetrahydrofuran, cyclohexanone and 2,3,4-tri-methoxy-benzaldehyde. Three non-classic hydrogen bonds were observed in the compound. X-ray crystallography shows that the crystal structure is stabilized by intermolecular C-H•••π interactions and it contains plenty of conjugated double bonds. The title compound was characterized by UV-vis and fluorescent spectral studies.

The direct electrochemical synthesis of some metal derivatives of lapachol

1997 ◽  
Vol 75 (5) ◽  
pp. 499-506 ◽  
Author(s):  
E.H. De Oliveira ◽  
G.E.A. Medeiros ◽  
C. Peppe ◽  
Martyn A. Brown ◽  
Dennis G. Tuck
Keyword(s):  
Electrochemical Oxidation ◽  
Copper Atom ◽  
Electrochemical Synthesis ◽  
Acetonitrile Solution ◽  
Triclinic Space Group ◽  
X Ray ◽  
Metal Anode ◽  
X Ray Crystallography ◽  
Metal Derivatives ◽  
Derivatives Of

The electrochemical oxidation of a sacrificial metal anode (M = Zn, Cd, Cu) in an acetonitrile solution of 2-hydroxy-3-(3-methyl-2-butenyl)-1,4-naphthoquinone, lapachol, C15H14O3 (=HL) gives ML2. The results are in keeping with earlier work on direct electrochemical synthesis in related systems. Adducts with 2,2′-bipyridine (bpy) and N,N,N′,N′-tetramethylethanediamine (tmen) have also been prepared. The structure of the 2,2′-bipyridine adduct of Cu(lapacholate)2 has been established by X-ray crystallography. The parameters are triclinic, space group [Formula: see text], a = 12.748(59) Å, b = 13.859(49) Å, c = 11.770(59) Å, α = 108.30(4)°, β = 108.08(3)°, γ = 68.94(3)°, Z = 2, R = 0.059 for 2256 unique reflections. The copper atom is in a distorted CuN2O2O2′ environment. The mechanism of the formation of this Cu(lapacholate)2 is discussed. Keywords: electrochemical synthesis, lapachol, X-ray crystallography, copper(II) complex.

Synthesis and characterization of a linked, π-π stacked organotin compound of 2-mercapto-6-nitrobenzothiazolyl diphenyltin chloride with 2-ethoxyl-6-nitrobenzothiazole

2003 ◽  
Vol 81 (7) ◽  
pp. 825-831 ◽  
Author(s):  
Chunlin Ma ◽  
Qin Jiang ◽  
Rufen Zhang
Keyword(s):  
Title Compound ◽  
Organotin Compound ◽  
X Ray Diffraction ◽  
X Ray ◽  
Stacking Interaction ◽  
X Ray Crystallography ◽  
H Nmr ◽  
Π Stacking ◽  
Π Stacking Interaction ◽  
Molecular Components

The new organotin compound, Ph2Sn(Cl)[S(C7H3N2O2S)]·[(C7H3N2O2S)OEt], assembled by an intermolecular aromatic benzothiazole–benzothiazole π-π stacking interaction, has been synthesized by the reaction of diphenyltin dichloride with 2-mercapto-6-nitrobenzothiazole. The title compound was characterized by elemental, IR, 1H NMR, and X-ray crystallography analyses. Single-crystal X-ray diffraction data reveals that the title compound has two different molecular components. The component Ph2Sn(Cl)[S(C7H3N2O2S)] has a pentacoordinate tin, which further forms an infinite one-dimensional chain by intermolecular non-bonded Cl···S interactions, resulting in an intercalation lattice that holds (C7H3N2O2S)OEt molecules. The formation of the molecule (C7H3N2O2S)OEt as well as its intercalated mechanism has also been discussed.Key words: organotin, assemble, π-π stacking interaction, 2-mercapto-6-nitrobenzothiazole, non-bonded interaction, crystal structure.

The molecular and crystal structure of [Pt(diethylenetriamine)(guanosine)](ClO4)2

1979 ◽  
Vol 57 (1) ◽  
pp. 57-61 ◽  
Author(s):  
R. Melanson ◽  
F. D. Rochon
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Least Squares ◽  
Platinum Atom ◽  
X Ray Diffraction ◽  
Orthorhombic Space Group ◽  
X Ray ◽  
R Factor ◽  
Square Planar ◽  
Coordination Plane

The crystal structure of [Pt(diethylenetriamine)(guanosine)](ClO4)2 has been determined by X-ray diffraction. The crystals are orthorhombic, space group P212121, with a = 12.486(6), b = 13.444(7), c = 14.678(11) Å, and Z = 4. The structure was refined by block-diagonal least-squares analysis to a conventional R factor of 0.050 and a weighted Rw = 0.045.The coordination around the platinum atom is square planar. Guanosine is bonded to platinum through N(7). The purine planar ring makes an angle of 62.7° with the platinum coordination plane. The structure is stabilized by hydrogen bonding.

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