In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Thermal Stability, Vapor Pressures, and Diffusion Coefficients of Some Metal 2,2,6,6-Tetramethyl-3,5-heptandionate [M(tmhd)n] Compounds, published in 2010-06-30, which mentions a compound: 14481-08-4, Name is Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II), Molecular C22H38NiO4, Application In Synthesis of Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II).
Many metal 2,2,6,6-tetramethyl-3,5-heptandionate [M(tmhd)n] compounds are volatile enough to be useful as precursors of the metals in vapor-phase deposition processes, for example, metal organic chem. vapor deposition (MOCVD). The thermal stability, vapor pressures, and gaseous diffusion coefficients of these compounds are, therefore, of fundamental importance for achieving reproducible and effective depositions. The present communication reports the thermal stability, vapor pressures, enthalpies of sublimation, and diffusion coefficients (in nitrogen and/or helium) for some metal 2,2,6,6-tetramethyl-3,5-heptandionate compounds [M(tmhd)n], namely, [Al(tmhd)3], [Cr(tmhd)3], [Cu(tmhd)2], [Fe(tmhd)3], [Mn(tmhd)3], and [Ni(tmhd)2] at temperatures between (341 and 412) K at ambient pressure. All of these compounds were found to be stable under the investigated exptl. conditions and thus are suitable precursors for CVD.
Different reactions of this compound(Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II))Application In Synthesis of Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II) require different conditions, so the reaction conditions are very important.
Reference:
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