Silane with transition metal ions

Both PH3 and S i 114 react similarly with bare transition metal ions except that no simple addition ions [MSiELJ have so far been observed. The Cu+ ion reacts by dehydrogenation and the most unreactive ion, Mn+, does not react in its ground state. The excited-state ion forms [MnH]+. The reactions of several first-row transition metal ions with silane (117-119) have been studied by the GIB method. The major product was [MSiH2]+ for the ground-state ions Ti+, V+, Cr+, Fe+, Co+, Ni+, Cu+, and Zn+. The group 3 (IIIB) ions Sc+, Y+, La+, and Lu+ (49) all reacted with silane in a similar manner to the first-row transition metal ions. 

It is our aim to combine the outstanding properties of nano- microtubes and metal-doped silica gel. There are many kinds of dopands, e.g., transition metal and rare-earth ions. A further advantage is the high heat resistance of these tubular structures up to 250 °C with organically functionalization, and up to 800 °C with only metal functionalization. Metal ions can be built directly in the silica backbone or adsorbed on the surface. Functionalized silanes can also be used to coordinate metal ions and build them into the tubes. 

Sfiica impregnated with saturated and unsaturated hydrocarbons (squalene, paraffin oil), silicone and plant oils, complexing agents (silver ions, boric add and borates, unsaturated and aromatic compounds), tigands (EDTA, digitonin), and transition metal salts silanized silica gel impregnated with anionic and cationic surfactants Cross-linked, polymeric dextran gels (Sephadex)... 

Another simple means of creating ions is a surface ionization source. This works effectively for species having low ionization energies, which in this work include atomic silicon and atomic transition metals. Typically, a rhenium filament resistively heated to about 2200 K is used. Silane or the vapors of a transition metal complex or salt are directed at the filament, where decomposition and ionization occur. It is generally believed that the electronic state distribution of the ions formed is in equilibrium at the filament temperature. This generally produces ground-state ions, e.g., exclusively Si+( P), with a distribution of spin-orbit levels associated with the filament temperature. 

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