Page 183 - 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-9.3

3. [Co 4 (CO) 12 ]
CO
OC CO

Co 4
CO
OC 1 CO
Co
OC CO
Co Co
2 CO 3
OC CO
C
O
2
2
2
tri-m-carbonyl-1:2k C;1:3k C;2:3k C-nonacarbonyl-
2
2
4
3
2
1k C,2k C,3k C,4k C-[T d -(13)-D -closo]-tetracobalt(6 Co—Co)
This compound has also b een named, in Section II-5.3.3.3.6 of Ref. 7, using the chain and
ring nomenclature (see Section IR-7.4). However, that name is based on a c ompletely
different numbering scheme.
Examples:
4. [Mo 6 S 8 ] 2
octa-m 3 -sulfido-octahedro-hexamolybdate(2 ), or
8
octa-m 3 -sulfido-[O h -(141)-D -closo]-hexamolybdate(2 )

5.
I PtMe 3
Me Pt I
3
Me Pt I
3
I PtMe 3
3
3
3
3
tetra-m 3 -iodido-1:2:3k I;1:2:4k I;1:3:4k I;2:3:4k I-dodecamethyl-
3
3
3
3
1k C,2k C,3k C,4k C-tetrahedro-tetraplatinum(IV), or
3
3
3
3
tetra-m 3 -iodido-1:2:3k I;1:2:4k I;1:3:4k I;2:3:4k I-dodecamethyl-
4
3
3
3
3
1k C,2k C,3k C,4k C-[T d -(13)-D -closo]-tetraplatinum(IV)
6. [(HgMe) 4 (m 4 -S)] 2þ
m 4 -sulfido-tetrakis(methylmercury)(2þ), or
tetramethyl-1kC,2kC,3kC,4kC-m 4 -sulfido-tetrahedro-tetramercury(2þ), or
4
tetramethyl-1kC,2kC,3kC,4kC-m 4 -sulfido-[T d -(13)-D -closo]-tetramercury(2þ)
IR-9.3 D E S C R I B I N G T H E C O N F I G U R A T I O N O F
C O O R D I N A T I O N E N T I T I E S
IR-9.3.1 Introduction
Once the constitution of a c oordination entity h as been defined, it remains t o d escribe t he
spatial r elationships between the structural c omponents o f t he molecule or ion. Molecules

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