Structural and Functional Models for the Dinuclear Copper Active Site in Catechol Oxidases:  Syntheses, X-ray Crystal Structures, Magnetic and Spectral Properties, and X-ray Absorption Spectroscopic Studies in Solid State and in Solution

1996 ◽  
Vol 35 (11) ◽  
pp. 3409-3419 ◽  
Author(s):  
Frank Zippel ◽  
Friedhelm Ahlers ◽  
Rüdiger Werner ◽  
Wolfgang Haase ◽  
Hans-Friedrich Nolting ◽  
...  
Keyword(s):  
Solid State ◽  
Crystal Structures ◽  
Active Site ◽  
Spectral Properties ◽  
Spectroscopic Studies ◽  
Dinuclear Copper ◽  
X Ray ◽  
Functional Models ◽  
X Ray Absorption

X-ray absorption spectroscopic studies of the Fe(II) active site of catechol 2,3-dioxygenase. Implications for the extradiol cleavage mechanism

Biochemistry ◽  
1995 ◽  
Vol 34 (20) ◽  
pp. 6649-6659 ◽  
Author(s):  
Lijin Shu ◽  
Yu-Min Chiou ◽  
Allen M. Orville ◽  
Marcia A. Miller ◽  
John D. Lipscomb ◽  
...  
Keyword(s):  
Active Site ◽  
Spectroscopic Studies ◽  
X Ray ◽  
X Ray Absorption

X-ray absorption spectroscopic studies of the high-spin iron(II) active site of isopenicillin N synthase: evidence for iron-sulfur interaction in the enzyme-substrate complex

Biochemistry ◽  
1992 ◽  
Vol 31 (19) ◽  
pp. 4596-4601 ◽  
Author(s):  
Robert A. Scott ◽  
Shengke Wang ◽  
Marly K. Eidsness ◽  
Aidas Kriauciunas ◽  
Charles A. Frolik ◽  
...  
Keyword(s):  
High Spin ◽  
Active Site ◽  
Spectroscopic Studies ◽  
X Ray ◽  
Substrate Complex ◽  
Enzyme Substrate ◽  
Iron Sulfur ◽  
X Ray Absorption ◽  
Isopenicillin N ◽  
High Spin Iron

Bis(1-phenyl-1-propyne) complexes of tungsten(II): crystal structures of [WI2(CO)(NCR)(η2-MeC2Ph)2] (R = Me, Et, or Ph)

2001 ◽  
Vol 79 (3) ◽  
pp. 263-271
Author(s):  
Paul K Baker ◽  
Michael GB Drew ◽  
Deborah S Evans
Keyword(s):  
Carbon Monoxide ◽  
Solid State ◽  
Crystal Structures ◽  
Octahedral Geometry ◽  
X Ray ◽  
X Ray Crystallography ◽  
Alkyne Complexes ◽  
First Time

Reaction of [WI2(CO)3(NCMe)2] with two equivalents of 1-phenyl-1-propyne (MeC2Ph) in CH2Cl2, and in the absence of light, gave the bis(1-phenyl-1-propyne) complex [WI2(CO)(NCMe)(η2-MeC2Ph)2] (1) in 77% yield. Treatment of equimolar quantities of 1 and NCR (R = Et, i-Pr, t-Bu, Ph) in CH2Cl2 afforded the nitrile-exchanged products, [WI2(CO)(NCR)(η2-MeC2Ph)2] (2-5) (R = Et (2), i-Pr (3), t-Bu (4), Ph (5)). Complexes 1, 2, and 5 were structurally characterized by X-ray crystallography. All three structures have the same pseudo-octahedral geometry, with the equatorial sites being occupied by cis and parallel alkyne groups, which are trans to the cis-iodo groups. The trans carbon monoxide and acetonitrile ligands occupy the axial sites. In structures 1 and 2, the methyl and phenyl substituents of the 1-phenyl-1-propyne ligands are cis to each other, whereas for the bulkier NCPh complex (5), the methyl and phenyl groups are trans to one another. This is the first time that this arrangement has been observed in the solid state in bis(alkyne) complexes of this type.Key words: bis(1-phenyl-1-propyne), carbonyl, nitrile, diiodo, tungsten(II), crystal structures.

X-ray Absorption Fine Structure Spectroscopic Studies of Octakis(DMSO)lanthanoid(III) Complexes in Solution and in the Solid Iodides

2007 ◽  
Vol 46 (19) ◽  
pp. 7742-7748 ◽  
Author(s):  
Ingmar Persson ◽  
Emiliana Damian Risberg ◽  
Paola D'Angelo ◽  
Simone De Panfilis ◽  
Magnus Sandström ◽  
...  
Keyword(s):  
Fine Structure ◽  
Spectroscopic Studies ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

X-ray absorption spectroscopic studies of halide ion hydration in hydrothermal solutions

2006 ◽  
Vol 70 (18) ◽  
pp. A573 ◽  
Author(s):  
T.M. Seward ◽  
C.M.B. Henderson ◽  
O.M. Suleimenov ◽  
J.M. Charnock
Keyword(s):  
Spectroscopic Studies ◽  
Hydrothermal Solutions ◽  
Ion Hydration ◽  
X Ray ◽  
X Ray Absorption

scholarly journals NOTIZEN. Weitere Verbindungen vom Typ A3NO3: K3NO3 und Rb3NO3 / Further Compounds Typ A3NO3: K3NO3 and Rb3NO3

1980 ◽  
Vol 35 (2) ◽  
pp. 237-238 ◽  
Author(s):  
Martin Jansen
Keyword(s):  
Solid State ◽  
Crystal Structures ◽  
Solid State Reaction ◽  
X Ray

Abstract K3NO3 and RbsNO3 were prepared by solid state reaction of equimolar mixtures of K2O/KNO2 and Rb20/RbN02, respectively. According to X-ray powder photographs their crystal structures are derived from the perovs-kite structure. K3NO3 is isostructural with Na3NO3 (a = 521.7 pm, Z = 1), Rb3NO3 represents a tetragonally distorted variant with a = 770.5, c = 550.8 pm and Z = 2.

X-ray absorption spectroscopic studies of the binding of ligands to FeMoco of nitrogenase from Klebsiella pneumoniae

1998 ◽  
Vol 275-276 ◽  
pp. 150-158 ◽  
Author(s):  
Ian Harvey ◽  
Richard W. Strange ◽  
Ralf Schneider ◽  
Carol A. Gormal ◽  
C. David Garner ◽  
...  
Keyword(s):  
Klebsiella Pneumoniae ◽  
Spectroscopic Studies ◽  
X Ray ◽  
X Ray Absorption
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