Top Picks: new discover of 2,4-Dimethylpyridine

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Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 108-47-4, Name is 2,4-Dimethylpyridine. In a document type is Article, introducing its new discovery., 108-47-4

The Magnetic Properties of Nickel(II) 2,2-Dimethylpropanoate Dimers and the Crystal Structure of Di-2,4-lutidinetetrakis(mu-2,2-dimethylpropanoato)dinickel(II)

Three dimeric Ni(II) 2,2-dimethylpropanoate complexes, 2, where L = 2-ethylpyridine, 2,4-lutidine (2,4-lu) and 2,5-lutidine, and the corresponding 2-ethylbutanoate complex with L = quinoline, have been prepared.All these complexes display a dimer type of antiferromagnetism.For the 2,4-lutidine complex, a change in magnetic properties at ca. 200 K is observed, indicating a phase transition.The structure of this complex at 22 deg C was determined by X-ray crystallography.Unit cell parameters for 2 are a = 9.846(1), b = 10.735(1), c = 11.215(1) Angstroem, alpha = 116.40(1), beta = 101.86(1), gamma = 98.65(1) deg, Z = 1.The green crystals are triclinic, space group P1.Based on 4236 observed reflections, the structure was refined to a conventional R-value of 0.048.The compound has the dimeric structure found in numerous copper acetate adducts.Thus nickel has a square pyramidal coordination with an axial 2,4-dimethylpyridine ligand and four basal oxygens, one from each of the 2,2-dimethylpropanoate ligands.The Ni…Ni separation in the dimer is 2,7080(5) Angstroem.

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Reference£º
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis