Page 45 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)

O R G A N O M E T A L L I C C O M P O U N D S IR-10.2

after that portion of the ligand name w hich denotes the particular function in which the
ligating atom is found.

Examples:

18. Me
Si
Me
Ti NBu t
Cl
Cl
5
[N-tert-butyl(Z -cyclopentadienyl)dimethylsilanaminido-kN]dichloridotitanium

19. PEt 3 4
Cl 3
Rh
Et 3 P 2
O
1
2
[(E)-Z -but-2-enal-kO]chloridobis(triethylphosphane)rhodium

1
The symbol Z is not used. For a c yclopentadienyl ligand bonded by only one s-bond one
1
uses cyclopenta-2,4-dien-1-yl or cyclopenta-2,4-dien-1-yl-kC .
Example:

20.
H
Fe
OC
OC

5
1
dicarbonyl(Z -cyclopentadienyl)(cyclopenta-2,4-dien-1-yl-kC )iron
If an unsaturated hydrocarbon serves as a b ridging l igand, the prefix m (see Sections
IR-10.2.3.1 and IR-10.2.3.4) is combined with both Z and k, w here necessary. The colon is
used to separate the locants of the bridging l igand which indicate binding to different metal
atoms. The metal atoms are numbered a ccording t o t he rules given in Section IR-9.2.5.6, and
their numbers are placed before the Z and k symbols with no hyphens. I f l igand locants are
also specified, these are separated from the Z symbol by a h yphen and the whole expression
is enclosed in parentheses, as in 1(2–4-Z).

Examples:
21. Me
Me C C
Ni Ni

2
5
2
(m-Z :Z -but-2-yne)bis[(Z -cyclopentadienyl)nickel](Ni— N i)
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