Displacement Reactions of Phosphorus(V) Compounds and Their Pentacoordinate Intermediates

P Gillespie, F Ramirez, I Ugi… - … International Edition in …, 1973 - Wiley Online Library
Reactions of phosphorus (v) compounds involving the mutual interconversion of tetra‐and
pentacoordinate species are discussed in a critical review emphasizing stereochemical …

Turnstile Rearrangement and Pseudorotation in the Permutational Isomerization of Pentavalent Phosphorus Compounds

F Ramirez, I Ugi - Advances in Physical Organic Chemistry, 1971 - Elsevier
Publisher Summary This chapter deals with turnstile rearrangement and peudorotation in
the permutational isomerization of pentavalent phosphorous compounds. The …

Austausch‐Reaktionen von Phosphor (v)‐Verbindungen und ihre pentakoordinierten Zwischenstufen

D Marquarding, F Ramirez, I Ugi… - Angewandte …, 1973 - Wiley Online Library
Abstract Die Reaktionen von Phosphor (v)‐Verbindungen, in deren Verlauf Übergänge
zwischen tetra‐und pentakoordinierten Spezies stattfinden, werden in einer kritischen …

The calculation of NMR spectra for many-site exchange problems

CS Johnson Jr, CG Moreland - Journal of Chemical Education, 1973 - ACS Publications
The calculation of NMR spectra for many-site exchange problems Page 1 Charles S.
Johnson, Jr. University of North Carolina Chapel Hill, 27514 and Charles G. Moreland North …

The nature of the fluorine exchange processes in some alkyl-and dimethylaminofluorophosphoranes

CG Moreland, GO Doak, LB Littlefield… - Journal of the …, 1976 - ACS Publications
The fluorine exchange processes in (CH3) 2PF3 (1),(CH3) 3PF2 (2),(C2H5) 2PF3 (3), and
[(CH3) 2N] 2PF3 (4) have been investigated by means of, l9F, and 3IP dynamic NMR …

Fluorine-19 nuclear magnetic resonance spectroscopy

R Fields - Annual Reports on NMR Spectroscopy, 1972 - Elsevier
Publisher Summary The chapter focuses on the fluorine-19 nuclear magnetic resonance
(NMR) spectroscopy. Most of the acyclic olefins and acetylenes have either fluorine or a …

Permutational isomerization of caged polycyclic oxyphosphoranes

F Ramirez, I Ugi, F Lin, S Pfohl, P Hoffman… - Tetrahedron, 1974 - Elsevier
The reaction of 1-phospha-2, 8, 9-trioxaadamantane with hexafluoroacetone gives a crystal-
line caged polycyclic pentaoxyphosphorane. The ambient temperature fourier transform 13C …

Intramolecular fluorine exchange in diphenyltrifluorophosphorane

CG Moreland, GO Doak… - Journal of the American …, 1973 - ACS Publications
Differential circular intensity was also observed in the Rayleigh line of the two enantiomers;
the magnitudes were roughly equal and the signs opposite. Quan-titative determination of …

Phosphoranes. I. Tris (trifluoromethyl) bis (dimethylamino) phosphorane,(CF3) 3P [N (CH3) 2] 2, and related chlorodimethylaminotrifluoromethylphosphoranes

DD Poulin, RG Cavell - Inorganic Chemistry, 1974 - ACS Publications
CF3. Acidic reagents such as methanol, methyl mercaptan, and H2S displace CF3H from
(CF3) 3P [N (CH3) 2] 2 to form pentavalent, four-coordinate products in complicated …

Diastereomeric isomers of five-coordinate organoantimony compounds

GO Doak, JM Summy - Journal of Organometallic Chemistry, 1973 - Elsevier
A series of unsymmetrical diarylantimony trichlorides of the type PhArSbCl 3, where Ar is a
substituted phenyl group have been prepared. An attempt was then made to convert these to …