Hantzsch-Widman names 13-16 elements

Replacement names are much less popular, and are not commonly used for the smaller monocycles, with the exception of analogs of pyridine having a heavier Group V element in place of nitrogen. Phosphabenzene occurs more frequently in primary publications than phosphinine , for example, probably because of the ambi uous state of Hantzsch-Widman... 

The modified element name sila indicates replacement in the carbon skeleton, and similar treatment can be applied to other element names. The parent hydride names of Table 5.2 may all be adapted in this way and used in the same fashion as in the oxa-aza nomenclature of organic chemistry. In inorganic chemistry, a major use is in names of cyclic derivatives that have heteroelement atoms replacing carbon atoms in structures. It may be possible to name such species by Hantzsch-Widman procedures (see p. 77), and these should always be used when applicable. 

The names borazole, boroxole and borthiole, respectively, for the three compounds in Examples 4, 5 and 6 have been abandoned long ago as they imply five-membered rings in the Hantzsch-Widman system. The names borazin(e), boroxin and borthiin indicate six-membered rings with unsaturation and only one boron atom and one other heteroatom (although the order of the element name stems is wrong) and are also not acceptable. 

When elements from groups 13-16 replace carbon atoms in monocyclic systems, the resulting structures may be named using the extended Hantzsch-Widman procedures. This... 

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