A New Type of .mu.4-Oxo-Bridged Copper Tetramer: Synthesis, X-ray Molecular Structure, Magnetism and Spectral Properties of (.mu.4-Oxo)tetrakis(.mu.-bromo)bis(.mu.-2,6-bis(morpholinomethyl)-4-methylphenolato)tetracopper(II) and (.mu.4-Oxo)tetrakis(.mu.-benzoato)bis(.mu.-2,6-bis(morpholinomethyl)-4-methylphenolato)tetracopper(II)

1994 ◽  
Vol 33 (3) ◽  
pp. 456-464 ◽  
Author(s):  
Stephan Teipel ◽  
Klaus Griesar ◽  
Wolfgang Haase ◽  
Bernt Krebs
Keyword(s):  
Molecular Structure ◽  
Spectral Properties ◽  
X Ray ◽  
New Type

The X-ray crystal structure of rapamycin, C51H79NO13

1978 ◽  
Vol 56 (18) ◽  
pp. 2491-2492 ◽  
Author(s):  
D. C. Neil Swindells ◽  
Peter S. White ◽  
John A. Findlay
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Macrolide Antibiotic ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
X Ray ◽  
Antifungal Antibiotic ◽  
X Ray Crystallography ◽  
New Type

The antifungal antibiotic Rapamycin crystallises in the orthorhombic space group P212121 with a = 34.85(2), b = 13.08(1), c = 12.25(1) Å. The molecular structure has been determined by X-ray crystallography to be a completely new type of macrolide antibiotic of formula C51H79NO13.

New Type of X-Ray Evidence on the Molecular Structure of Globular Proteins

Nature ◽  
1952 ◽  
Vol 169 (4291) ◽  
pp. 138-139 ◽  
Author(s):  
D. P. RILEY ◽  
U. W. ARNDT
Keyword(s):  
Molecular Structure ◽  
Globular Proteins ◽  
X Ray ◽  
New Type

dh-μ-Carboxilato-e-μ-hydroxo-f-μ-oxo-bis[trichloroantimony(V)] Ein durch Carbonsäuren stabilisiertes dimeres Antimonoxitrichlorid / dh-μ-Carboxilato-e-μ-hydroxo-f-μ-oxo-bis[trichloro-antimony(V)]A Dimeric Trichloro Antimony(V) Oxide Stabilized by Carboxilic Acids

1979 ◽  
Vol 34 (4) ◽  
pp. 563-568 ◽  
Author(s):  
Franz-J. Koller ◽  
Wolfgang Schwarz ◽  
Armin Schmidt
Keyword(s):  
Molecular Structure ◽  
Hydrogen Bonds ◽  
Vibrational Spectra ◽  
Crystal And Molecular Structure ◽  
X Ray ◽  
New Type

Abstract Tetrachloroantimony(V) carboxilates and tetrachloroantimony(V) alkoxides, resp., react with carboxilic acids and alkohols or water, resp., to yield d,h-μ-carboxilato-e-μ-hydroxo-f-μ-oxo-bis[trichloroantimony(V)] (1, R = H, CH3), a new type of cyclic antimony(V) compounds. The crystal and molecular structure of 1 (R = CH3) is determined by X-ray analysis. Units of 1 (R - CH3) are associated by strong hydrogen bonds. The vibrational spectra of 1 (R = H, CH3) are discussed.

Crystal structure of an inclusion complex between chiral monoaza-15-crown-5 and S(–)-1-phenyl-ethyl ammonium percholorate

2003 ◽  
Vol 218 (5) ◽  
Author(s):  
Süheyla Özbey ◽  
F. B. Kaynak ◽  
M. Toğrul ◽  
N. Demirel ◽  
H. Hoşgören
Keyword(s):  
Crystal Structure ◽  
Inclusion Complex ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
New Type

AbstractA new type of inclusion complex, S(–)-1 phenyl ethyl ammonium percholorate complex of R-(–)-2-ethyl - N - benzyl - 4, 7, 10, 13 - tetraoxa -1- azacyclopentadecane, has been prepared and studied by NMR, IR and single crystal X-ray diffraction techniques. The compound crystallizes in space group

The crystal and molecular structure of tris(pentamethylenedithiocarbamate) chromium(III)-chloroform (1 : 2)

1981 ◽  
Vol 46 (1) ◽  
pp. 6-19 ◽  
Author(s):  
Viktor Kettman ◽  
Ján Garaj ◽  
Jaroslav Majer
Keyword(s):  
Molecular Structure ◽  
Structural Analysis ◽  
Crystal And Molecular Structure ◽  
Analysis Method ◽  
Complex Molecules ◽  
Coordination Polyhedra ◽  
X Ray ◽  
Cell Dimensions ◽  
Crustal Density ◽  
Unit Cell Dimensions

The crystal and molecular structure of [Cr(S2CN(CH2)5)3].2 CHCl3 was found by the X-ray structural analysis method. The value R 0.090 was found for 1 131 observed independent reflections. The substance crystallizes in a space group of symmetry P212121 with the following unit cell dimensions: a = 0.8675 (6), b = 1.815(2), c = 2.155(3) nm. The experimentally observed crustal density was 1.48 Mgm-3 and the value calculated for Z = 4 was 1.51 Mgm-3. The CrS6 coordination polyhedron has the shape of a trigonally distorted octahedron, where the D3 symmetry is a approximately retained. The degree of trigonal distortion expressed as the projection of the chelate S-Cr-S angle onto the plane perpendicular to the C3 pseudo axis is Φ = 41.7° (Φ = 60° for an octahedron). The skeleton of the structure formed by the complex molecules contains channels filled with chloroform molecules. The specific type of complex-chloroform interaction consists of the formation of hydrogen bonds of the chloroform protons with the fully occupied pπ-orbitals of the sulphur atoms in the coordination polyhedra. The low stability and crystal decomposition can be explained by loss of chloroform from the channels.

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