The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Mesitylcopper(I)(SMILESS: [Cu]C1=C(C)C=C(C)C=C1C,cas:75732-01-3) is researched.Name: 5-Methylpicolinaldehyde. The article 《Carbonyl complexes of copper(I) aryloxides》 in relation to this compound, is published in New Journal of Chemistry. Let’s take a look at the latest research on this compound (cas:75732-01-3).
Reaction between mesitylcopper and the phenols 2,4,6-tris(t-butyl)phenol and 2,4,6-trimethylphenol under CO resulted in a dinuclear Cu(I) carbonyl species with bridging aryloxo ligands, viz [(Cu(OC6H2t-Bu3)(CO))2], which crystallizes as the THF solvate, [(Cu(OC6H2t-Bu3)(CO))2]·THF (1), and [(Cu(OC6H2Me3)(CO))2] (2), resp. Cu(I) is three-coordinated in both mols. and the Cu-O distances are 1.974(5) and 1.984(5) Å in 1 and 1.95(2) and 1.97(2) Å in 2. The carbonyl stretching frequencies are similar for 1 and 2, both in the solid state and in toluene solution: 2101 cm-1 for solid 1, 2106 cm-1 for solid 2, and 2104 and 2101 cm-1 for toluene solutions of 1 and 2, resp. If not stored under CO, the compounds decarbonylate readily; in 1 Cu-C is 1.781(8) Å and C-O 1.122(9) Å and in 2 the corresponding distances are 1.81(3) Å and 1.10(3) Å, resp. The Cu-C-O fragments are approx. linear in both compounds As for similar carbonyl complexes of Cu(I), the Cu-C bond is judged to be predominantly of σ character, with minimal metal → ligand π* contribution. Crystal data, 1: monoclinic, space group P21/n, a 9.172(4), b 23.304(6), c 9.725(4) Å, β 102.29°(4), Z = 2, R = 0.065 (Rw = 0.084); 2: cubic, space group Fd3̅, a 31.728(6) Å, Z = 48, R = 0.092 (Rw = 0.143).
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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com