186
6 Construction of the Names of Complex Compounds
Table 19 recapitulates once again the main statements of this paragraph in
the form of a synopsis.
Table 19. Formulae and names of isotopically modified compounds in direct comparison
Modification
Formula
Unmodified
Specifically labelled
[IJC]HJ-C[ZHzl-OFH]
Selectively labelled
[ O,2- 2 H]CHJCH20H
[2_2H2;z,1800;I]CH3CH20H
Unselectively labelled [2H]CHJCH20H
Isotopically deficient CHr [def13C] Hz-O H
or CHJ -(12C]H2-OH
6.7
Specifications of Stereochemistry
Name
Ethanol
(2,2,2- 2 HJ)Ethan(2H, 18 0 )01
or: (O,2,2,2- 2 H4, 18 0 )Ethanol
[2-13C; 1 ,1- 2 H2]Ethan[2H]01
or: [2- 13 C;O,I,I- 2 H3]Ethanol
[0,2- 2 H]Ethanol
[2-2H2;2,180o;dEthanol
[2H]Ethanol oder [D]Ethanol
[ I-def13C]Ethanol
[P2C] Ethanol
All constitutive elements of a compound having been duly considered in
compliance with the existing rules, still another set of descriptors has to be
envisaged to account properly for all stereochemical features involved.
Definitive status has already been attained by the rules for characterizing
cis/trans isomers, stereogenic (formerly: asymmetric) centers, and
exo/ endo relationships in bicyclic compounds, as will be outlined in subsequent sections. A unified procedure for the treatment of other stereogenic units will be given at the end of this chapter.
6.7.1
cis/trans Isomerism; the E/l Convention
cis or trans-arrangement of atoms or groups obtains when these are found
at the same or the opposite side of a reference plane common to both
stereoisomers of the respective molecule. For double bond systems this is
the plane containing the n-bond, for cyclic systems it is that plane to which
the ring skeleton approximates most closely.
6 Construction of the Names of Complex Compounds
Table 19 recapitulates once again the main statements of this paragraph in
the form of a synopsis.
Table 19. Formulae and names of isotopically modified compounds in direct comparison
Modification
Formula
Unmodified
Specifically labelled
[IJC]HJ-C[ZHzl-OFH]
Selectively labelled
[ O,2- 2 H]CHJCH20H
[2_2H2;z,1800;I]CH3CH20H
Unselectively labelled [2H]CHJCH20H
Isotopically deficient CHr [def13C] Hz-O H
or CHJ -(12C]H2-OH
6.7
Specifications of Stereochemistry
Name
Ethanol
(2,2,2- 2 HJ)Ethan(2H, 18 0 )01
or: (O,2,2,2- 2 H4, 18 0 )Ethanol
[2-13C; 1 ,1- 2 H2]Ethan[2H]01
or: [2- 13 C;O,I,I- 2 H3]Ethanol
[0,2- 2 H]Ethanol
[2-2H2;2,180o;dEthanol
[2H]Ethanol oder [D]Ethanol
[ I-def13C]Ethanol
[P2C] Ethanol
All constitutive elements of a compound having been duly considered in
compliance with the existing rules, still another set of descriptors has to be
envisaged to account properly for all stereochemical features involved.
Definitive status has already been attained by the rules for characterizing
cis/trans isomers, stereogenic (formerly: asymmetric) centers, and
exo/ endo relationships in bicyclic compounds, as will be outlined in subsequent sections. A unified procedure for the treatment of other stereogenic units will be given at the end of this chapter.
6.7.1
cis/trans Isomerism; the E/l Convention
cis or trans-arrangement of atoms or groups obtains when these are found
at the same or the opposite side of a reference plane common to both
stereoisomers of the respective molecule. For double bond systems this is
the plane containing the n-bond, for cyclic systems it is that plane to which
the ring skeleton approximates most closely.