52
1 Parent Structures
encountered most frequently in heterocycles. A number of important
replacement terms for ions - which can easily be generalized and are subordinate to those of their neutral counterparts - are also shown. If
valences other than the standard ones exemplified in Table 4 are to be
indicated, this is symbolized by the Greek letter A with the appropriate
bonding number n as superscript, thus leading to the format An.
Table 4. "a" terms for heteroatoms in descending order of priority (incomplete')
Element
«a" term
Element
"a)) term
.. /
.. 0
.. /
" <±!/
- I
- 1 - .. P-1oda, lodonia
Bisma, Bismutonia
.. "
-Bi
/BI"
"
0/
I
- 0 -
-0
Oxa,Oxonia
-SiSila
.. "
I
0/ Thia, Thionia
I
-s-S
.. "
-GeGerma
0/
I
-Se-Se
Selena,
I
.. " Selenonia -SnStanna
0/
I
-Te-Te
Tellura,
.. " Telluronia
I
-PbPlumba
.. /
,,0/
I
-N
/N"
Aza,Azonia
"
,,8/
Bora, Borata
/
,,0
-B
/B"
(system.:
"8 Azanylia,
"
Boranuida)
/N:
:N:
/
Azanida
0
- B -
Boranylia
.. /
,,0/ Phospha,
-P
/p"
-AI/
"
Phosphonia
"
Alumina
.. / ,,0/
-ZnZinca
-As
/AS"
Arsa, Arsonia
"
-HgMercura
.. /
,,0/
-Sb
/Sb" Stiba, Stibonia
"
• The complete list of "a" prefixes for replacement names is to be found in the Appendix
(Table 20)