IL27122A - Tris(omega-cyanopolymethylene)tin hydroxides and their preparation - Google Patents

Description

25754 This invention relates to hyd of the general formulas in which or The invention also provides a process fo the preparation of hydroxides of medium by in an aqueous a ponding halide of the formulas in which X is bromine or with a oxide capable of forming a metal halide lees soluble in the reaction the of formula e halides of formula may be prepared by any suitable Preferably they are prepared by the Methods described i Patent 1 and in the Israeli Patent Specification the case the prepared by redistribution of complex of and According to the specification 27121 the is prepared by reacting an active halogen with compound of the formulas in is an halides prepared by both are of high purity and are particularly suitable starting material for the present The metal forming a halide which is soluble in the reactio medium than the hydroxide of formula may for silve oxide or The molar ratio of halide to the metal oxide may vary within a wide pending the reaction for this ratio may ary from the stoichiometric amount up to about Generally a ratio of below about is Any aqueous solution of a water miscible organic solvent may be used as the reaction media for present Preferred reaction medium include aqueous acetone and aqueous The ratios of water ganic solvent may vary within the range of their solubilities and there does not appear to be any critical Generally a mixture well with most the typical reactions according to the present invention may be represented by the following equations acetone reactions form the of the ti hydroxide chosen as an The invention is illustrated by the Examples I This concerns the reaction according to Equation above with the exception that hydrofuran was used in place of gms of which was made into a mud with of was added in 150 of TH in which there was dissolved of bromide and was followed by a 70 ml flush of The reaction mixture was agitated for one hour during which time the temperature was increased slightly by the slightly exothermic one hour reaction mixture was filtered and the clear filtrate was tested for bromine which indicated the reaction to be The filtrate wag then further reacted with gms of in 15 mis of The second filtrate which halogen was added to 350 ms of ethyl ether to precipitate the The white solid obtained by filtration was The remaining filtrate was stripped to the residu consisted of of white The total weight of dry product was had a of The yield was was prepared accordance with the above The process was carried out in substantially the same manner as in Example 1 with the exception that the additional of the filtrate with the metal oxide was omitted beeause the bromine test after 35 minutes of reaction was The white crystalline solids recovered had and the yield was The hydroxide was insoluble in It soluble in aqueous acetone or aqueous It was soluble in hot acetone containing about Found insufficientOCRQuality

Claims (1)

1. CLAIMS hydroxides of the general formulas wherein is 3 o hydroxide o the formulas A method preparing hydroxides of formula in Claim which medium comprises in an aqueous organic halide of the in which X is or iodine and is or with a metal oxide whose halide is less soluble in the reaction medium than the hydroxide of formula A according to Claim which the oxide used is silver oxide or method according to Claims 3 or wherein the amount of metal oxide used is in the range between 2 and 5 moles for each mole of halide of formula in Claim A method according to any one of Claims to wherein the aqueous organic solvent is aqueous acetone or aqueous a insufficientOCRQuality