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
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LiCN
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Be(CN)2
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B(CN)3
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C(CN)4 C2(CN)2
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NH4CN ONCN O2NCN N3CN
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OCN− -NCO O(CN)2
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FCN
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Ne
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NaCN
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Mg(CN)2
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Al(CN)3
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Si(CN)4 (CH3)3SiCN
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P(CN)3
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SCN− -NCS (SCN)2 S(CN)2
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ClCN
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Ar
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KCN
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Ca(CN)2
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Sc(CN)3
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Ti
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V
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Cr(CN)63−
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Mn(CN)2
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Fe(CN)2 Fe(CN)64− Fe(CN)63−
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Co(CN)2 Co(CN)3− 5
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Ni(CN)2 Ni(CN)42− Ni(CN)44−
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CuCN
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Zn(CN)2
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Ga(CN)3
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Ge(CN)2 Ge(CN)4
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As(CN)3 (CH3)2AsCN (C6H5)2AsCN
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SeCN− (SeCN)2 Se(CN)2
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BrCN
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Kr
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RbCN
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Sr(CN)2
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Y(CN)3
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Zr
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Nb
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Mo(CN)84−
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Tc
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Ru
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Rh
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Pd(CN)2
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AgCN
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Cd(CN)2
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In(CN)3
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Sn(CN)2
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Sb(CN)3
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Te(CN)2 Te(CN)4
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ICN
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Xe
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CsCN
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Ba(CN)2
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*
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Lu(CN)3
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Hf
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Ta
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W(CN)84−
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Re
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Os
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Ir
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Pt(CN)64-
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AuCN Au(CN)2−
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Hg2(CN)2 Hg(CN)2
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TlCN
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Pb(CN)2
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Bi(CN)3
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Po
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At
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Rn
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Fr
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Ra
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**
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Lr
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Rf
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Db
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Sg
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Bh
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Hs
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Mt
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Ds
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Rg
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Cn
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Nh
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Fl
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Mc
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Lv
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Ts
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Og
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*
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La(CN)3
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Ce(CN)3 Ce(CN)4
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Pr(CN)3
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Nd
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Pm
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Sm(CN)3
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Eu(CN)3
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Gd(CN)3
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Tb
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Dy(CN)3
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Ho(CN)3
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Er
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Tm
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Yb(CN)3
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**
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Ac(CN)3
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Th(CN)4
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Pa
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UO2(CN)2
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Np
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Pu
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Am
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Cm
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Bk
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Cf
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Es
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Fm
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Md
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No
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