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Some further esters have been prepared by methods already described in Part I and also by a transesterification process (cf. Speer, 1949), e.g. Certain physical properties, for example boiling‐points at different pressures, densities, viscosities and molecular weights have been determined, and the action of heat and moisture investigated. A modification of Burnop's (1938) expression has been devised by which the boiling‐points of the normal esters can be accurately predicted. In general, the molecular weights, determined cryoscopically, have been found to give approximately double the values calculated from the molecular formulae, and structural formulae are suggested to account for these results.

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A number of mono‐ and di‐chlorotitanium alkoxides have been prepared by the method of Jennings, Wardlaw & Way (1936). Thus acetyl chloride reacts with titanium tetra‐alkoxides to give monochlorotitanium trialkoxides: Ti(OR)4 + CH3·COCl = TiCl(OR)3 + CH3·CO2R The monochloro‐esters, when treated with a further molecular proportion of the same reagent, yield dichlorotitanium dialkoxides: TiCl(OR)3 + CH3·COCl = TiCl2(OR)2 + CH3·CO2R The dichloro‐compounds have also been obtained by the action of titanium tetrachloride on alcohols: TiCl4 + 2ROH = TiCl2(OR)2 + 2HCl In general these products are viscous liquids, soluble in organic solvents and very easily hydrolysed by water.