TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The other metals are magnesium, copper and palladium. The halosilane comprises a silicon containing compound of formula (RaSiX(4-a)).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Process: The process further comprises: purging and/or treating a reactor containing the ternary intermetallic compound before contacting the organohalide with the ternary intermetallic compound; vaporizing the organohalide before contacting the organohalide with the ternary intermetallic compound; liquefying the organohalide before contacting the organohalide with the ternary intermetallic compound; contacting the ternary intermetallic compound with hydrogen before and/or during contacting with the organohalide; recovering the halosilane from the reaction product; and using the halosilane as a reactant in a process to make a product comprising polycrystalline silicon, a polysiloxane, a hydridohalosilane, a polyorganosiloxane, and a polyorgano-hydride halosiloxane. The reaction is carried out at a temperature of 300-400 degrees C. EXAMPLE - Reaction apparatus used was an open-ended glass tube with quartz wool to hold the ternary silicide in place. The tube was connected to a flow reactor. An O-ring was fitted over the glass tube at the inlet to prevent flow of gases around the outside. The reactor effluent was passed through an actuated 6-way valve with constant 100 mu l injection loop before being discarded. Samples were taken from the reactor effluent by actuating the injection valve. The samples were passed directly into the injection port of a 6890A Agilent gas chromatograph (GC) and GC-mass spectrometry (MS) equipped with a thermal conductivity detector (TCD) and a flame ionization detector (FID) for analysis, to afford ternary intermetallic compounds (Pd4Si4Cu2). 0.6 g of Ternary intermetallic compound was loaded into the glass tube reactor and treated with 30 standard cubic centimeters/minute (sccm) of an inert gas (e.g. nitrogen or argon) at 300 degrees C for 2 hours. Next, the flow of inert gas was stopped and methyl chloride was flowed through the reactor. Samples were taken from the reactor effluent and injected into a GC/GC-MS for analysis using an online switching valve and worked up to afford organohalosilane compound comprising dimethyldichlorosilane and methyltrichlorosilane.