Orientation of the unshared electron pair of the nitrogen atom in N-substituted 2,5-dimethyl-4-piperidinones

1989 ◽  
Vol 25 (4) ◽  
pp. 426-427
Author(s):  
A. �. Aliev ◽  
A. A. Fomichev
Keyword(s):  
Nitrogen Atom ◽  
Electron Pair ◽  
Unshared Electron Pair

Structure and bonding in cyclic phosphoramidates as determined by carbon-13 magnetic resonance

1979 ◽  
Vol 57 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Gerald W. Buchanan ◽  
Frederick G. Morin
Keyword(s):  
Magnetic Resonance ◽  
Nitrogen Atom ◽  
Electron Pair ◽  
Chemical Shifts ◽  
Lone Pair ◽  
Ring Conformation ◽  
Delocalized Electron ◽  
Nitrogen Lone Pair ◽  
Structure And Bonding

13C chemical shifts and 13C–31P couplings are reported for 11 cyclic phosphoramidates of ring sizes from four to nine. Vicinal couplings are compared with those of carbocyclic analogs and provide insight regarding the degree of nitrogen lone pair derealization into the N—P bond. For six-membered and larger rings, there appears to be nearly complete lone pair delocalization, i.e., a trigonal planar nitrogen atom. In azetidine derivatives the nitrogen lone pair remains localized, giving rise to a highly puckered ring conformation. Pyrrolidine derivatives are viewed as having a nitrogen with a partially delocalized electron pair.

Dipole moments of the bonds and the unshared electron pair in sulfites and sulfoxides

1969 ◽  
Vol 18 (3) ◽  
pp. 495-498
Author(s):  
L. K. Yuldasheva ◽  
R. P. Arshinova ◽  
S. G. Vul'fson
Keyword(s):  
Electron Pair ◽  
Dipole Moments ◽  
Unshared Electron Pair

Structures involving unshared electron pair. The Crystal Structures of As(OCOCH3)3 and As2O(OCOCH3)4

1993 ◽  
Vol 619 (5) ◽  
pp. 943-946 ◽  
Author(s):  
Boris Kamenar ◽  
Milenko Bruvo ◽  
Jasna Butumovi?
Keyword(s):  
Crystal Structures ◽  
Electron Pair ◽  
Unshared Electron Pair

ChemInform Abstract: Stereochemistry of Iodine(V) and Tellurium(IV) Fluoride Compounds with an Unshared Electron Pair

ChemInform ◽  
2010 ◽  
Vol 27 (50) ◽  
pp. no-no
Author(s):  
YU. V. KOKUNOV
Keyword(s):  
Electron Pair ◽  
Unshared Electron Pair

ChemInform Abstract: Structures Involving Unshared Electron Pair. The Crystal Structures of As(OCOCH3)3 and As2O(OCOCH3)4.

ChemInform ◽  
2010 ◽  
Vol 24 (29) ◽  
pp. no-no
Author(s):  
B. KAMENAR ◽  
M. BRUVO ◽  
J. BUTUMOVIC
Keyword(s):  
Crystal Structures ◽  
Electron Pair ◽  
Unshared Electron Pair
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