XVII: Synthesis and Caracterisation of 渭-oxo-bis(dicyclopentadienylmethyltitane IV) (Cp 2 TiCH 3 ) 2 O is obtained by reacting (Cp 2 TiCl) 2 O with methyllithium. IR., NMR. and MS. spectrum are reported. Autocatalytic decomposition of the product is inferred from differential thermal ...
spectra in which the methyl and the methylene protons have different chemical shifts.The conformations of the β-hydroxyketones and the β-diols were studied by i.r. spectroscopy. Models for a preferred attack of the organomagnesium compounds are proposed and product-determining transition states ...
Some experimental data are given on the infrared spectra between 3300 and 3500 cm 1 of dilute solutions in carbon tetrachloride of three types of model compounds: CH 3 CONH-CH(R 1 )-CONH(R 2 ), (I); CH 3 -CON(CH 3 )-CH(R 1 )-CONH(R 2 ), (II) and CH 3 -CONH-CH(R...
The CH 2 stretching and bending frequencies have been studied with good resolving power in O- and S- heterocyclic saturated molecules. Sulfur has a marked lowering effect (∼ 40 cm –1 ) on the bending frequency of neighbour CH 2 groups. This vibration is not significantly altered by the ...