Tuning Reactivity of Platinum(II) Complexes

3.2.1.5 Synthesis of [Pt{4’–(2’’’–CH3–phenyl)–6–(3’’’–isoquinoyl)–2,2’–
bipyridine}Cl]SbF6
The complex, [Pt{4’–(2’’’–CH3-phenyl)–6–(3’’–isoquinoyl)–2,2’–bipyridine}Cl]SbF6
(CH3PhisoqPtCl) was synthesised using a modification of the method used by
Summerton (Scheme 3.6). 28
[Pt(PhCN) 2 Cl 2 ]
+
N
AgSbF 6
N
Pt
Cl
CH 3
N
AgCl ppt
CH 3 CN , 24 h Reflux
SbF 6
24 h Reflux
CH 3 CN
Scheme 3.6: Synthesis of the complex CH3PhisoqPtCl
8
[Pt(PhCN) 2-x (CH 3 CN) x Cl]SbF 6
A solution of AgSbF6 (24.6 mg, 0.0702 mmol) in acetonitrile (5 ml) was added to a
suspension of [Pt(PhCN)2Cl2] (34.8 mg, 0.0737 mmol) in acetonitrile (12 ml). The
mixture was stirred for 24 h under refluxed under nitrogen atmosphere. The
precipitated AgCl was filtered off using 0.45 μm nylon filter membrane on a Millipore
filtration unit. To the filtrate an equimolar amount of solid 4’–(2’’’–phenyl)–6–(3˝–
isoquinoyl)–2,2´–bipyridine (24.6 mg, 0.0737 mmol) was added and the mixture was
stirred for a further 24 hours under reflux. The solution was filtered while still hot; the
precipitate of [Pt{4’–(2’’’–CH3–phenyl)–6–(3’’–isoquinoyl)2,2’–bipyridine}Cl]SbF6
was carefully washed with copious amounts of diethyl ether, cold acetonitrile and dried
under vacuum. A scarlet red powder was obtained. Characterisation of [Pt{4’–(2’’’–CH3–
phenyl)–6–(3’’–isoquinoyl)2,2’–bipyridine}Cl]SbF6 was by means of elemental
analysis for % C, H and N, as well as by infrared, 1 H and 13 C NMR spectroscopy. [Pt{4’-
(2’’’-CH3-phenyl)-6-(3˝-isoquinoyl)-2,2´-bipyridine}Cl]SbF6 (CH3PhisoqPtCl): Yield:
N
N
CH 3
N