150
4 Metalorganic and Metalloidorganic Compounds
identical atoms appearing as late as possible in the "a" term Tables 4 and
20, rings must be made up of identical duplexes (repeating or repetitive
units). Compound names are then formed by combining the respective "a"
terms in the reverse order to that shown in Tables 4 and 20 and by prefixing them with numerical terms indicating the number of terminal atoms
in the case of chains and the number of identical units for rings.
H
H,S(-O t-Bu
/
, I
o
Si .....
H I
I
t-Bu
'Si
0
/ '
.'
H O-~I""H
H
H
P
HB ..... 'BH
I
I
HP
P
'B . . . . . 'SiMe3
H
P
N~ 'N
I
II
HO C
P 2 1 6 P - Ph
2 'CH /' 'N" \
2
I
Ph
Me
4.4
1, 1, 1,3,3,3-Hexamethyldisilazane
2,3,4-Triphenyltriphosphazane
2,2-Di -t -butylcyclotetrasiloxane
1-Trimethylsilylcyclotriboraphosphane
(1-Methyl-6,6-diphenyl-6,P-cyclotriphosphaza-3,5-dien-2-yl)acetic acid
or conjunctively: ... 3,5-dien-2-acetic acid
Organic Derivatives of Alkali and Alkaline Earth Metals
and Comparable Compounds
In contrast to all preceding names conventional names for the highly polar
alkali and alkaline earth metal-organic compounds only rarely reflect the