Mechanistic and Stereochemical Investigation of Imino Ethers Formed by Alcoholysis of Coordinated Nitriles: X-ray Crystal Structures of cis- and trans-Bis(1-imino-1-methoxyethane)dichloroplatinum(II)

1995 ◽  
Vol 34 (5) ◽  
pp. 1130-1137 ◽  
Author(s):  
Renzo Cini ◽  
Paola A. Caputo ◽  
Francesco P. Intini ◽  
Giovanni Natile
Keyword(s):  
Crystal Structures ◽  
X Ray ◽  
Cis And Trans

Pentamethylcyclopentadienyl molybdenum and tungsten carbene complexes. X-Ray crystal structures of cis- and trans-[Mol(CO)2{C(CH2)3O}(η-C5Me5)]

1988 ◽  
pp. 1449-1456 ◽  
Author(s):  
Neil A. Bailey ◽  
Deborah A. Dunn ◽  
Clare N. Foxcroft ◽  
Gavin R. Harrison ◽  
Mark J. Winter ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Carbene Complexes ◽  
X Ray ◽  
Cis And Trans ◽  
And Tungsten

Synthesis and characterization of cis and trans isomers of [NiL2(NCS)2] [L=1-(2-aminoethyl)pyrrolidine]: X-ray single-crystal structures

Polyhedron ◽  
2000 ◽  
Vol 19 (15) ◽  
pp. 1803-1807 ◽  
Author(s):  
Inamur Rahaman Laskar ◽  
Tapas Kumar Maji ◽  
Siddhartha Chaudhuri ◽  
Ashutosh Ghosh ◽  
Nirmalendu Ray Chaudhuri
Keyword(s):  
Single Crystal ◽  
Crystal Structures ◽  
Synthesis And Characterization ◽  
Trans Isomers ◽  
X Ray ◽  
Single Crystal Structures ◽  
Cis And Trans Isomers ◽  
Cis And Trans

Silicon-containing macrocycles and polymers via metathesis: x-ray crystal structures of cis,cis- and trans,trans-1,1,6,6-tetraphenyl-1,6-disilacyclodeca-3,8-diene

1993 ◽  
Vol 12 (5) ◽  
pp. 1780-1789 ◽  
Author(s):  
Jens T. Anhaus ◽  
Vernon C. Gibson ◽  
William Clegg ◽  
Stephen P. Collingwood
Keyword(s):  
Crystal Structures ◽  
X Ray ◽  
Cis And Trans

Kristallstrukturen, Schwingungsspektren und Normalkoordinatenanalyse von cis- und trans-[ReCl4 (NCSe)(SeCN)]2- / Crystal Structures, Vibrational Spectra, and Normal Coordinate Analysis of cis- and trans-[ReCl4 (NCSe)(SeCN)]2-

1999 ◽  
Vol 54 (3) ◽  
pp. 357-362 ◽  
Author(s):  
S. Strueß ◽  
W. Preetz
Keyword(s):  
Low Temperature ◽  
Crystal Structures ◽  
Normal Coordinate Analysis ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Normal Coordinate ◽  
Space Group ◽  
X Ray ◽  
Cis And Trans ◽  
Ir And Raman

The crystal structures of cis-(n-Bu4N)2[ReCl4(NCSe)(SeCN)] (monoclinic, space group P21/n a = 10.794(3), b = 11.687(3), c = 35.716(4) Å, β = 96.97(1)°, Z = 4) and trans- (CH2Py2)[ReCl4(NCSe)(SeCN)] (monoclinic, space group P21/c, a = 8.348(2), b = 7.518(1), c - 31.295(7) Å, ß = 97.12(2)°, Z = 4) have been determined by single crystal X-ray diffraction analysis. Based on the molecular parameters of the X-ray determinations the low temperature (10 K) IR and Raman spectra of the (n-Bu4N) salts have been assigned by normal coordinate analysis. The valence force constants are fd(ReN) = 1.68 and fd(ReSe) =1.15 mdyn/Å.

ChemInform Abstract: Pentamethylcyclopentadienyl Molybdenum and Tungsten Carbene Complexes. X-Ray Crystal Structures of Cyclic cis- and trans-(MoI(CO)2(=C(CH2)3O)(η-C5Me5)).

ChemInform ◽  
1988 ◽  
Vol 19 (39) ◽  
Author(s):  
N. A. BAILEY ◽  
D. A. DUNN ◽  
C. N. FOXCROFT ◽  
G. R. HARRISON ◽  
M. J. WINTER ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Carbene Complexes ◽  
X Ray ◽  
Cis And Trans ◽  
And Tungsten

Synthesis of cis- and trans-platinum compounds with pyrimidine and crystal structures of trans-[Pt(pyrimidine)2X2] where X = Cl and Br

1981 ◽  
Vol 59 (2) ◽  
pp. 195-198 ◽  
Author(s):  
F. D. Rochon ◽  
P. C. Kong ◽  
R. Melanson
Keyword(s):  
Crystal Structures ◽  
Platinum Atom ◽  
Platinum Compounds ◽  
X Ray Diffraction ◽  
Trans Isomers ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters ◽  
Cis And Trans

cis- and trans-[Pt(pm)2X2] where pm = pyrimidine and X = Cl, Br, have been synthesized. The cis-compounds were isolated from the reaction of K2PtCl4 and pm in water, while the trans-isomers were obtained by isomerization of cis-[Pt(pm2X2] in DMF in the presence of pm.The crystal structures of the two compounds trans-[Pt(pm)2X2] have been determined by X-ray diffraction. The two compounds (X = Br and Cl) are isostructural. The crystals belong to the monoclinic P21/c space group. The cell parameters are a = 4.787(3), b = 14.257(7), c = 8.503(3) Å and β = 99.33(4)° when X = Cl and a = 4.826(3), b = 14.822(5), c = 8.516(5) Å and β = 101.26(4)° when X = Br. The platinum atom is located on a centre of symmetry at the origin and Z = 2. The residual factors are R = 0.029 and Rw = 0.036 (X = Cl) and R = 0.036 and Rw = 0.035 (X = Br).

Transmission electron microscope studies in special ceramics

1978 ◽  
Vol 36 (1) ◽  
pp. 268-269
Author(s):  
A. Zangvil ◽  
L.J. Gauckler ◽  
G. Schneider ◽  
M. Rühle
Keyword(s):  
Phase Diagrams ◽  
Crystal Structures ◽  
Thin Foil ◽  
Limited Extent ◽  
Complex Materials ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Electron Microscopes ◽  
Lattice Resolution

The use of high temperature special ceramics which are usually complex materials based on oxides, nitrides, carbides and borides of silicon and aluminum, is critically dependent on their thermomechanical and other physical properties. The investigations of the phase diagrams, crystal structures and microstructural features are essential for better understanding of the macro-properties. Phase diagrams and crystal structures have been studied mainly by X-ray diffraction (XRD). Transmission electron microscopy (TEM) has contributed to this field to a very limited extent; it has been used more extensively in the study of microstructure, phase transformations and lattice defects. Often only TEM can give solutions to numerous problems in the above fields, since the various phases exist in extremely fine grains and subgrain structures; single crystals of appreciable size are often not available. Examples with some of our experimental results from two multicomponent systems are presented here. The standard ion thinning technique was used for the preparation of thin foil samples, which were then investigated with JEOL 200A and Siemens ELMISKOP 102 (for the lattice resolution work) electron microscopes.

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