Platinocyanide, also known as tetracyanoplatinate (IUPAC), cyanoplatinate, or platinocyanate, is a polyatomic ion with the molecular formula [Pt(CN)4]2−. The name also applies to compounds containing this ion, which are salts of the hypothetical platinocyanic acid (sometimes platinocyanhydric acid).
Barium platinocyanide, Ba[Pt(CN)4] is a phosphor and a scintillator. It fluoresces green in the presence of x-rays and gamma rays. It was important in the discovery of X-rays, and in the development of the fluoroscope.
One platinocyanide salt, Krogmann's salt (dipotassium tetracyanoplatinate bromide trihydrate), has unusually high electric conductance.
Salts and covalent derivatives of the cyanide ion |
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HCN |
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He |
LiCN |
Be(CN)2 |
B(CN)3 |
C(CN)4 C2(CN)2 |
NH4CN ONCN O2NCN N3CN |
OCN− -NCO O(CN)2 |
FCN |
Ne |
NaCN |
Mg(CN)2 |
Al(CN)3 |
Si(CN)4 (CH3)3SiCN |
P(CN)3 |
SCN− -NCS (SCN)2 S(CN)2 |
ClCN |
Ar |
KCN |
Ca(CN)2 |
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Sc(CN)3 |
Ti |
V |
Cr(CN)63− |
Mn |
Fe(CN)2 Fe(CN)64− Fe(CN)63− |
Co(CN)2 Co(CN)3− 5 |
Ni(CN)2 Ni(CN)42− Ni(CN)44− |
CuCN |
Zn(CN)2 |
Ga(CN)3 |
Ge(CN)2 Ge(CN)4 |
As(CN)3 (CH3)2AsCN (C6H5)2AsCN |
SeCN− (SeCN)2 Se(CN)2 |
BrCN |
Kr |
RbCN |
Sr(CN)2 |
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Y(CN)3 |
Zr |
Nb |
Mo(CN)84− |
Tc |
Ru |
Rh |
Pd(CN)2 |
AgCN |
Cd(CN)2 |
In(CN)3 |
Sn(CN)2 |
Sb(CN)3 |
Te(CN)2 Te(CN)4 |
ICN |
Xe |
CsCN |
Ba(CN)2 |
* |
Lu(CN)3 |
Hf |
Ta |
W(CN)84− |
Re |
Os |
Ir |
Pt(CN)42- Pt(CN)64-
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AuCN Au(CN)2− |
Hg2(CN)2 Hg(CN)2 |
TlCN |
Pb(CN)2 |
Bi(CN)3 |
Po |
At |
Rn |
Fr |
Ra |
** |
Lr |
Rf |
Db |
Sg |
Bh |
Hs |
Mt |
Ds |
Rg |
Cn |
Nh |
Fl |
Mc |
Lv |
Ts |
Og |
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* |
La(CN)3 |
Ce(CN)3 Ce(CN)4 |
Pr(CN)3 |
Nd |
Pm |
Sm(CN)3 |
Eu(CN)3 |
Gd(CN)3 |
Tb |
Dy(CN)3 |
Ho(CN)3 |
Er |
Tm |
Yb(CN)3 |
** |
Ac(CN)3 |
Th(CN)4 |
Pa |
UO2(CN)2 |
Np |
Pu |
Am |
Cm |
Bk |
Cf |
Es |
Fm |
Md |
No |
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