Multiplicative prefixes hydrides

The assembly of the components to construct a full name starts by attaching the names of the detachable prefixes in alphabetical order to the name of the parent hydride. Then, and only then, necessary multiplicative prefixes are introduced, without changing the alphabetical order obtained previously. Finally, locants are inserted. 

In the other method, the ending -ane is changed to -ene or -yne to indicate the presence of a double or triple bond. This is used for alkanes and mono- and polycyclic alkane parent hydrides. In alkanes and cycloalkanes, the change of the -ane ending to -ene or -yne indicates the presence of one double or triple bond. Multiplicative prefixes di-, tri-, tetra-, etc. are used to signal the multiplicity of unsaturated bonds. Locants placed immediately in front of the endings -ene and -yne are used as needed. 

The names of polynuclear hydrides (i.e. compounds with molecules consisting of chains) are obtained by prefixing the -ane names of Table 5.2 with the appropriate multiplicative prefixes of di-, tri-, tetra-, etc. 

The preferred names are also obtained by applying the principles of substitutive nomenclature. Substituents, considered as replacing hydrogen atoms, are named using prefixes of the appropriate group names and are cited, if there is more than one, in alphabetical order before the name of the parent hydride, using parentheses and multiplicative prefixes as necessary. 

Names cfoligonttclear hydrides derived from elements of standard bonding number. Names are constructed by prefixing the ane names of the corresponding mononuclear hydride with the appropriate multiplicative prefix (di-, tri-.letra-. etc.) corresponding to the number of atoms of the chain bonded in series. 

Neutral polyboron hydrides are called boranes and the simplest possible parent structure, BH3, is given the name borane . The number of boron atoms in a boron hydride molecule is indicated by a multiplicative prefix. The principal difference between this system of naming... 

Multiplicative prefixes indicate the presence of two or more identical substituents if the substituents themselves are substituted, the prefixes bis , tris , tetrakis , etc. are used. In the case of a multiplicative prefix ending in a and a suffix starting with a vowel, the a is elided (see Example 2 below). The final e of a parent hydride name is elided in front of a suffix starting with a vowel (see Examples 1 and 5 below). 

Where there is more than one kind of substituent, the prefixes are cited in alphabetical order before the name of the parent hydride, parentheses being used to avoid ambiguity, and multiplicative prefixes being used as necessary. Non-standard bonding numbers are indicated using the. -convention (see Section IR-6.2.2.2). An overview of the rules for naming substituted derivatives of parent hydrides is given in Section IR-6.3, while a detailed exposition may be found in Ref. 3. 

Combined suffix composed of the suffix yl and the multiplicative prefix di , indicating the loss of two hydrogen atoms from a parent hydride resulting in a diradical, or a substituent group with two single bonds, if necessary accompanied by locants, e.g. hydrazine-1,2-diyl, HNNH or —HNNH— phosphanediyl, HP<. See also ylidene . 

Suffix for names of anions formed by removal of one or more hydrons from a parent hydride, accompanied by locants and multiplicative prefixes as appropriate, e.g. hydrazinide, H2NNH hydrazine-1,2-diide, HNNH- disulfanediide, S22- methanide, CH3 . 

Suffix specifying substitution af a hydrogen atom in a parent hydride for the group —OH, accompanied by locants and multiplicative prefixes if appropriate, e.g. silanol, SiH3OH trisilane-1,3-diol, SiH2(OH)SiH2SiH2OH. 

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