Diethylamino trimethylstannane

Submitted by C. M. WRIGHT and E. L. MUETTERTIES Checked by T. J. PULLUKATf and G. URRYt 

The synthesis of dialkylamino derivatives of tin (IV)1 can be readily accomplished by the reaction of the lithium salt of the amine and the corresponding chlorostannane. J An extensive series of representative aminostannanes of formula R Sn-(NR/2) 4—n where n — 0 to 3 has been recently synthesized.3 These compounds are very moisture-sensitive. Caution should he observed in the handling of these dialkylaminostannanes because of the recent report of mild explosions during the distillation of bis dialkylamino) stannaries where temperatures were allowed to reach 200°, and during mild heating of chloroform solutions  

The n-butyllithium in hexane was purchased from Foote Mineral Company, Exton, Pa. The diethylamine was dried over sodium hydroxide, and the solvents were dried over sodium metal. 

X Attempted direct aminolysis of halostannanes yielded the corresponding amine adducts.2 

Submitted by KURT NIEDENZU and JOHN W. DAWSON Checked by A. W. LAUBENGAYERf 

A 250-ml. three-necked round-bottomed flask equipped with a dropping funnel with a pressure-equalizing side arm, a reflux condenser, a thermometer, and a magnetic stirrer was thoroughly flushed with nitrogen. (A nitrogen atmosphere was maintained during the entire reaction.) 

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Diethylamino)trimethylstannane is a colorless liquid which boils at 36°/6 mm. The compound is quickly hydrolyzed by moisture. The proton nuclear magnetic resonance spectrum of a neat sample shows a CH3—Sn resonance at 9.92 r with HChs—Sn119 splitting of 56.5 cycles and HCh,—Sn117 splitting of 54.0 cycles. The ethyl resonance consists of a triplet at 9.10 r... 

Bis(trimethylstannyl)methylamine, Sn-00151 1068-70-8 T ris(trimethylstannyl)amine, Sn-00192 1068-74-2 (Diethylamino)trimethylstannane, Sn-00148 1070-91-3 Bis(trimethyltin) sulfide, Sn-00128... 

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