Preparation and structural studies of diphenylthiophosphinito rhodium(III) complexes. X-ray structure analysis of [{(C5Me5)Rh}2(µ-Cl)2(µ-Ph2PS)][BPh4]

1989 ◽  
pp. 1987-1992 ◽  
Author(s):  
M. Teresa Pinillos ◽  
M. Pilar Jarauta ◽  
Daniel Carmona ◽  
Luis A. Oro ◽  
M. Carmen Apreda ◽  
...  
Keyword(s):  
Structure Analysis ◽  
Structural Studies ◽  
X Ray

ChemInform Abstract: Preparation and Structural Studies of Diphenylthiophosphinito Rhodium(III) Complexes. X-Ray Structure Analysis of (((C5Me5)Rh)2(μ-Cl)2(μ-Ph2PS))(BPh4).

ChemInform ◽  
1990 ◽  
Vol 21 (4) ◽  
Author(s):  
M. T. PINILLOS ◽  
M. P. JARAUTA ◽  
D. CARMONA ◽  
L. A. ORO ◽  
M. C. APREDA ◽  
...  
Keyword(s):  
Structure Analysis ◽  
Structural Studies ◽  
X Ray

scholarly journals Synthesis and Solid-state Structures of 1,3- and 1,4-Bis(diethylgallyl) benzene

2009 ◽  
Vol 64 (11-12) ◽  
pp. 1375-1380
Author(s):  
Joseph Izundu ◽  
Peter Jutzi ◽  
Beate Neumann ◽  
Henning Sielemann ◽  
Hans-Georg Stammler
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
Structural Studies ◽  
X Ray ◽  
Coordination Behavior ◽  
Redistribution Reactions ◽  
Solid State Structures

The compounds 1,3-bis(diethylgallyl)benzene (3) and 1,4- bis(diethylgallyl)benzene (6) were prepared by reaction of the corresponding chloromercuriobenzenes with an excess of triethylgallium by applying pressure and higher temperatures. These compounds very easily undergo redistribution reactions in solution and in the solid state. Extremely air-sensitive crystals suitable for an X-ray crystal structure analysis were obtained from triethylgallium as solvent. The structural studies revealed the presence of tetra-coordinated carbon and gallium atoms in symmetric aryl-diethylgallyl bridging units. The coordination behavior of 3 and 6 in the solid state is quite different from that of the corresponding methyl-substituted compounds

Malonenamidoxim, Nickelkomplexe und deren ßeaktionsprodukte mit Sauerstoff und Kohlendioxid: Vergleichende Strukturuntersuchungen / Malonenamide Oxime, Nickel Complexes, and their Reaction Products with Oxygen and Carbon Dioxide: Comparative Structural Studies

1982 ◽  
Vol 37 (10) ◽  
pp. 1255-1265 ◽  
Author(s):  
Helmut Endres ◽  
Nasser Kadkhodai-Elyaderani
Keyword(s):  
Carbon Dioxide ◽  
Structure Analysis ◽  
Macrocyclic Ligand ◽  
Nickel Complexes ◽  
Molecular Structures ◽  
Structural Studies ◽  
Reaction Products ◽  
X Ray ◽  
Ethanol Solvate ◽  
Methylene Groups

Abstract Malonenamide oxime [HONC(NH2)CH2C(NH2)NOH = C3H8N4O2] (1), its bis-chelate complex with Ni(II) [Ni(C3H7N4O2)2] (2) and an ethanol solvate of this complex [Ni(C3H7N4O2)2 · 0.6 C2H5OH] (3) are characterized by X-ray structure analysis, as well as a paramagnetic tris-complex [Ni(C3H7N4O2)2(C3H8N4O2)] (4), which forms a catena structure in the crystal. The molecular structures of two reaction products of 2 with air are described: [Ni(C3H5N4O3)2(H2O)2] · 4 H2O (5) has formed by oxidation of the methylene groups and may be taken as a complex of mesoxalamide oxime; [NiC8H16N8O8] · 6 H2O (6) has a macrocyclic ligand which is a derivative of orthocarbonic acid, formed by addition of carbon dioxide to the oxime groups.

Ribosome Structural Organization

1974 ◽  
Vol 32 ◽  
pp. 332-333
Author(s):  
James A. Lake
Keyword(s):  
Ribosomal Proteins ◽  
Structural Organization ◽  
Three Dimensional ◽  
Small Subunit ◽  
Structural Studies ◽  
X Ray Diffraction ◽  
Specific Antibodies ◽  
X Ray ◽  
E Coli ◽  
Complete Sequences

The understanding of ribosome structure has advanced considerably in the last several years. Biochemists have characterized the constituent proteins and rRNA's of ribosomes. Complete sequences have been determined for some ribosomal proteins and specific antibodies have been prepared against all E. coli small subunit proteins. In addition, a number of naturally occuring systems of three dimensional ribosome crystals which are suitable for structural studies have been observed in eukaryotes. Although the crystals are, in general, too small for X-ray diffraction, their size is ideal for electron microscopy.

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