Results 171 to 180 of about 2,517 (213)

One-pot synthesis of CpRe(CO)2H2 and trans-CpRe(CO)2(SnPh3)2 from cis- and trans-CpRe(CO)2Br2 and Ph3SnH. Involvement of a radical-chain sequence in the formation of CpRe(CO)2H2

Inorganica Chimica Acta, 1995
Abstract Treatment of cis- or trans-CpRe(CO)2Br2 (1) with Ph3SnH yields the corresponding dihydride CpRe(CO)2H2 (2) and Ph3SnBr. Conducting the same reaction in the presence of pyridine or Et3N gives trans-CpRe(CO)2(SnPh3)2 (3). The molecular structure of 3 has been determined by X-ray crystallography.
Simon G Bott, Michael G Richmond
exaly   +4 more sources

Pancréatite aiguë après CPRE

Acta Endoscopica, 1997
J C Paris, Paris J C
exaly   +2 more sources

Multiple Scattering Effects in EXAFS of $\mathrm{CpRe(CO)_3}$

, 1993
We studied multiple scattering effects in the EXAFS of CpRe(CO)3 solved in acetone. Forward scattering at the carbon atoms of the almost linear metal-carbonyl moieties plays a dominant role. The contributions of other multiple scattering paths are nearly negligible.
Crüsemann, R., Fritzsche, V., Hückmann, S., Bertagnolli, H.   +3 more
openaire   +3 more sources

Characterization and evidence for alkylation of hydridodicarbonylcyclopentadienylrhenate(1-) ion [CpRe(CO)2H-] in the conversion of dihydrodicarbonylcyclopentadienylrhenium [CpRe(CO)2H2] to CpRe(CO)2R2. Synthesis of a rhenacyclopentane and its thermolysis to methylcyclopropane

Journal of the American Chemical Society, 1983
Robert G Bergman
exaly   +2 more sources

ChemInform Abstract: CHARACTERIZATION AND EVIDENCE FOR ALKYLATION OF HYDRIDODICARBONYLCYCLOPENTADIENYLRHENATE(1‐) ION (CPRE(CO)2H‐) IN THE CONVERSION OF DIHYDRODICARBONYLCYCLOPENTADIENYLRHENIUM (CPRE(CO)2H2) TO CPRE(CO)2R2. SYNTHESIS OF A RHENACYCLOPENTANE AND ITS THERMOLYSIS TO METHYLCYCLOPROPANE

Chemischer Informationsdienst, 1984
AbstractBei dem Versuch, das Dianion von (I) durch Einwirkung von Basen darzustellen, erhielt man den Komplex (II) als K‐Salz (Nachweis durch IR‐ und 1H‐NMR‐Daten), der durch Alkylierung, Deprotonierung und erneute Alkylierung zu dem Produkt (IV) reagiert.
G. K. YANG, R. G. BERGMAN
openaire   +1 more source

Mediating the ‘National’ and the ‘Local’ in the Environmental Policy Process: A Case Study of the CPRE [PDF]

Environment and Planning C: Government and Policy, 2003
As environmental concerns press upon public policy so state agencies tend to enter into governmental ‘partnerships’ with environmental groups. On the one hand, these ‘partnerships’ allow the state to call upon forms of expertise held by the groups and to gain broad legitimacy for state policies. On the other hand, the development of policy partnerships
Lowe P, Murdoch J
openaire   +2 more sources

PREVENCION DE LA PANCREATITIS AGUDA POST-CPRE

Endoscopy, 2013
Objetivos: Analizar las CPRE realizadas en nuestro hospital durante un periodo de 10meses. Evaluar las complicaciones y el uso de medidas preventivas para la pancreatitis aguda (PA) post-CPRE. Metodos: Se incluyeron 157 pacientes a los que se realizo CPRE entre junio-2012 y abril-2013.
M Millán Lorenzo, P Ferrero León, R Calle Sanz, J Ampuero Herrojo, R Llorca Fernández, A Martínez-Alcalá García, A Garrido Serrano, M Romero Gómez   +7 more
openaire   +1 more source

Complicaciones atípicas post - CPRE

2016
Endoscopic retrograde cholangiography (ERCP) has become an essential procedure in the diagnosis and treatment of biliopancreatic diseases. Complications of this procedure are unusuals, but potentially dangerous, being necessary to know them how to recognize for the application of appropriate treatment. The following case belongs to.
Mora, Néstor, Rodríguez, Julio, Piñerúa, Luis, Bolaño, Rosa, Viloria, Morela, Calderón, Vivian, Guerra, Angie   +6 more
openaire   +1 more source

Relaxation mechanisms, bonding, and molecular reorientation in CpRe(CO)3

Journal of Organometallic Chemistry, 1992
Abstract Carbonyl 13 C and 17 O and cyclopentadienyl 13 C NMR spin-lattice relaxation times of CpRe(CO) 3 were measured as a function of temperature in the solvent CDCl 3 . Analysis of T 1 ( 13 CO) revealed that, unlike in most metal carbonyls, where chemical shift anisotropy is the dominant mechanism, the major contribution to 13 C relaxation
P. Yuan, M.G. Richmond, M. Schwartz
openaire   +1 more source

Improved AB-CPREs with HRA Security

2023 International Conference on Data Security and Privacy Protection (DSPP), 2023
Yu Zhang, Yang Wang, Mingqiang Wang
openaire   +1 more source