Page 167 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)

C O O R D I N A T I O N C O M P O U N D S IR-9.2

6. O 4−
C CH 2
CH CO 2
2
O N
2 2
2
2 2
Pt II (CH ) N(CH CO )
Cl Cl
dichlorido[(ethane-1,2-diyldinitrilo-kN)(acetato-kO)triacetato]platinate(II)

7. H C CH 2 2−
2
O CCH 2 CH CO 2
2
2
H C N N CH 2
2
Pt II
C O O C
O O
2
2
0
0
0
0
[(ethane-1,2-diyldinitrilo-k N,N )(N,N -diacetato-k O,O )(N,N -
diacetato)]platinate(2 ), or
0
{N,N -ethane-1,2-diylbis[N-(carboxylatomethyl)glycinato-kO,kN]}platinate(2 )
8. −
O OH 2
C CH 2
CH CO 2
2
O N
CH 2
Co
O N CH 2
C C H 2 CH 2
O O
C
O

2
aqua[(ethane-1,2-diyldinitrilo-k N,N )tris(acetato-kO)acetato]cobaltate(1 ),
0
or aqua[N-{2-[bis(carboxylato-kO-methyl)amino-k–]ethyl}-
N-(carboxylato-kO-methyl)glycinato-k–]cobaltate(1 )

A c ompound of edta in which one a mino group is not coordinated while all four carboxylato
groups are bound to a s ingle metal ion would b ear the ligand name (ethane-1,2-diyldinitrilo-
kN)tetrakis(acetato-kO) w ithin the name of the complex.
The mixed sulfur–oxygen cyclic polyether 1,7,13-trioxa-4,10,16-trithiacyclooctadecane
might chelate to alkali metals only through i ts oxygen atoms and to second-row transition
elements only through its sulfur atoms. The corresponding kappa indexes for such chelate
7
3 4
1
3
16
10
complexes would be k O ,O ,O 13 and k S ,S ,S , r espectively.
Examples 9–11 illustrate three modes o f c helation of the ligand N-[N-(2-aminoethyl)-
N ,S-diphenylsulfonodiimidoyl]benzenimidamide. The use of kappa indexes allows these
0
binding modes ( and others) to be distinguished and identified, in spite of the abundance of
heteroatoms that could coordinate.
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