Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

1

Nomenclature of Coordination Complexes
Rule 1: The names of neutral coordination complexes are given without spaces
...
e
...

Na [PtCl3 (NH3 )]
Sodium amminetrichloroplatinate(II)
K2 [CuBr4 ]
Potassium tetrabromocuprate(II)
In the above examples, the cations sodium and potassium are named first and then
separated by a space from the names of the anions
...


mer-[Ru(PPh3 )3 Cl3 ]
mer-trichlorotris(triphenylphosphine)ruthenium(III)
Here the coordination complex is neutral, so no spaces are necessary
...
The metal is listed next, following in parentheses by the
oxidation state of the metal
...
Some examples are:
(CH3 )3 SO
(NH2 )2 CO
C5 H5 N
terpy
bpy
en
PCl3
PPh3

dimethylsulfoxide (DMSO)
urea
pyridine
terpyridine
2,2’-bipyridine
ethylenediamine
trichlorophosphine
triphenylphopshine

EXCEPTIONS: Some neutral molecules, when serving as ligands are given special
names
...
When the name of the
free, uncoordinated anion ends in “ate”, the ligand name is changed to end in “ato”
...
Some examples are:
N3- (nitride)
N3 - (azide)
NH2 - (amide)

nitrido
azido
amido

3
(CH3 )2 N- (dimethylamide)

dimethylamido

When the name of the free, uncoordinated anion ends in “ite”, the ligand name is changed
to end in “ito”
...
However,
when the coordination entity is an anion, the name of the metal is altered to end in “ate”
...
Geometrical isomers are
designated by cis- or trans- and mer- or fac-, the latter two standing for meridional or
facial, respectively
...
When there are two bridging
ligands of the same kind, the prefix di-? - is used
...
An important
exception arises when the molecule is symmetrical, and a more compact name can be
given by listing the bridging ligand first
...


5
NH3
H3N
NH3
H3N

Cr

H3N

Cr

O
H H3N
NH3

NH3
NH3

Br5

H3N
? -Hydroxobis[pentaamminechromium(III)] bromide

H3N
H3N

Pt

Cl
Cl

Pt

NH3
NH3

Cl2

Di-? -chloro-bis[diammineplatinum(II)] chloride

Rule 10: Ligands that are capable of linkage isomerism are given specific names for each
mode of attachment

---