The Wolff rearrangement can be induced via thermolysis, photolysis, or transition metal catalysis. Three methods are used in electrology&colon; Galvanic, thermolysis, and blend. Thermal decomposition, or thermolysis, is a chemical decomposition caused by heat. Tube furnaces can also be used for thermolysis reactions, involving either organic or inorganic reactants. More than 352 thermochemical cycles have been described for water splitting or thermolysis. The main method for preparing these compounds is thermolysis of mixtures of phosphorus and sulfur. Depending on process conditions, this thermolysis can afford nanosized powders of oxide or metallic phases. In thermolysis, water molecules split into their atomic components hydrogen and oxygen. Another way to generate ketenes is through flash vacuum thermolysis (FVT) with 2-pyridylamines. Thermolysis or photolysis of triazolines expels nitrogen, producing an aziridine. Photolysis or thermolysis of azides are good ways to generate nitrenes. In the same year Harold Kroto established spectroscopically that thermolysis of MePH generates CH=PMe. The thermolysis reaction proceeds via the intermediary of (NH)[EuCl]. The thermolysis reaction proceeds via the intermediacy of (NH)[YCl]. Orange tetrakis (tert-butyl)cyclobutadiene arises by thermolysis of its isomer tetra-tert-butyltetrahedrane.