Page 36 - Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)

IR-2.5 G R A M M A R

3. Et P
3
Cl
Pt
Me N NMe 2
2
Pt
Cl
PEt 3

[(Et P)ClPt(Me NCH CHCHCH NMe )PtCl(PEt )]
3
3
2
2
2
2
4. H
Ph P C PPh 2
2
(OC) Fe FeH(CO) 3
3

[(OC) Fe(μ-Ph PCHPPh )FeH(CO) ]
3
3
2
2
IR-2.4 S O L I D U S

The solidus ( / ) is used in names of formal addition compounds to separate t he arabic
numerals which indicate the proportions of individual constituents in the compound.

Examples:

1. BF 3 ·2H 2 O b oron trifluoride— w ater (1/2)
2. BiCl 3 ·3PCl 5 bismuth trichloride— p hosphorus pentachloride (1/3)

IR-2.5 D O T S , C O L O N S , C O M M A S A N D S E M I C O L O N S

IR-2.5.1 Dots
Dots are used in formulae in various positions.

(a) As right superscripts t hey indicate unpaired electrons in radicals ( see Section
IR-4.6.2).
Examples:

1. HO *
2 *
2. O 2
(b) As right superscripts in the Kro ¨ger–Vink notation of solid-state chemistry, they indicate
the unit of positive effective charge (see Section IR-11.4.4).

Example:
x
3. Li x Li;1 2x Mg * Li;x V Li,x Cl Cl
0

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