Platinocyanide
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.
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Salts and covalent derivatives of the cyanide ion
HCN | 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 | 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 | 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- | 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 | |||
* | 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 |