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Sodium ferrocyanide is the sodium salt of the coordination compound of formula [Fe(CN) 6] 4−. In its hydrous form, Na 4 Fe(CN) 6 · H 2 O (sodium ferrocyanide decahydrate), it is sometimes known as yellow prussiate of soda. It is a yellow crystalline solid that is soluble in water and insoluble in alcohol. The yellow color is the color of ...
Ferrocyanide is the name of the anion [Fe 6] 4−. Salts of this coordination complex give yellow solutions. It is usually available as the salt potassium ferrocyanide, which has the formula K 4 Fe(CN) 6. [Fe(CN) 6] 4− is a diamagnetic species, featuring low-spin iron(II) center in an octahedral ligand environment.
For example, Cu compounds with Cu oxidation state +2 are called cupric and those with state +1 are cuprous. [4]: 172 The oxidation numbers of elements allow predictions of chemical formula and reactions, especially oxidation-reduction reactions. The oxidation numbers of the most stable chemical compounds follow trends in the periodic table.
A representative example is the reaction of hydrogen with Vaska's complex, trans-IrCl(CO)[P(C 6 H 5) 3] 2. In this transformation, iridium changes its formal oxidation state from +1 to +3. The product is formally bound to three anions: one chloride and two hydride ligands. As shown below, the initial metal complex has 16 valence electrons and a ...
A well known couple is [Fe(CN) 6] 3−/4−. Mn(IV), Mn(III), and Mn(II) are known for hexacyanomanganate. Mn(IV), Mn(III), and Mn(II) are known for hexacyanomanganate. Few unidentate ligands allow similar redox transformations wherein both members of the redox couple are observable in solution.
Prussian blue (also known as Berlin blue, Brandenburg blue, Parisian and Paris blue) is a dark blue pigment produced by oxidation of ferrous ferrocyanide salts. It has the chemical formula Fe 3+ 4 [Fe 2+ 6] 3.
+4 +6 +8 8 [136] 109 meitnerium: Mt +1 +3 +6 9 [136] 110 darmstadtium: Ds +2 +4 +6 10 [136] 111 roentgenium: Rg −1 +3 +5 11 [136] 112 copernicium: Cn +2 +4 12 [136] 113 nihonium: Nh 13 114 flerovium: Fl 14 115 moscovium: Mc 15 116 livermorium: Lv −2 +4 16 [137] 117 tennessine: Ts −1 +5 17 118 oganesson: Og −1 +1 +2 +4 +6 18 [136] [138 ...
2 H 2 O ⇌ O 2 + 4 H + + 4 e − (anode: oxidation) When solving the Nernst equation for each corresponding reduction reaction (need to revert the water oxidation reaction producing oxygen), both equations have a similar form because the number of protons and the number of electrons involved within a reaction are the same and their ratio is ...