The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 2,6-Dimethyl-3,5-heptanedione(SMILESS: CC(C)C(CC(C(C)C)=O)=O,cas:18362-64-6) is researched.Reference of Boc-D-Prolinol. The article 《Spectra of metal β-ketoenolates. The electronic spectrum of monomeric nickel(II) acetylacetonate and the infrared spectra of matrix-isolated acetylacetonates of cobalt(II), copper(II), and zinc(II)》 in relation to this compound, is published in Journal of Physical Chemistry. Let’s take a look at the latest research on this compound (cas:18362-64-6).
The uv electronic spectra of several Ni(II) β-ketoenolates in CHCl3 and hydrocarbon solvents are described and are shown to be consistent with the assignment of Cotton and Wise for the about 233- and 268-mμ bands. The vapor uv spectrum of Ni(II) acetylacetonate also shows these bands, as expected for a planar species. The ir spectra of CO2 matrix-isolated acetylacetonates of Cu(II), Ni(II), Co(II), and Zn(II) are reported between 650 and 2200 cm.-1 These spectra suggest the existence of similar (planar) structures for the Ni(II) and Cu(II) monomeric species and similar (tetrahedral) structures for the Zn(II) and Co(II) complexes. Since previous ir studies of metal acetylacetonates have ignored the fact that the anhydrous complexes are polymeric, it is fortunate that only minor differences exist between the spectra of the matrix-isolated Cu(II) complex, the complex which has received the greatest study, and the crystalline material.
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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica