Potassium diplatinum(II) tetrakispyrophosphite
Potassium diplatinum tetrakispyrophosphite is the inorganic compound with the formula K4. It is a water-soluble yellow salt. The compound has a long-lived, strongly luminescent excited state, with an emission maximum at ~510 nm and a lifetime near 10 μs.
Synthesis and reactions
The complex is prepared by heating a mixture of potassium tetrachloroplatinate and phosphorous acid:Several quat salt derivatives are known.
The anion reacts with boron trifluoride to give the BF2-capped complex 4-.
The compound reacts with halogens to give Pt dimers:
With substoichiometric halogen, linear chain compounds result.