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Synthesis and spectroscopic characterization of dimethyl-, di-n-butyl-, di-t-butyl-and diphenyl-tin(iv) derivatives of dipeptides: Crystal and molecular structure of di-n-butyltin(iv) glycylvalinate

✍ Scribed by Brigitte Mundus-Glowacki; Friedo Huber; Hans Preut; Giuseppe Ruisi; Renato Barbieri

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
805 KB
Volume
6
Category
Article
ISSN
0268-2605

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✦ Synopsis

Values of coupling constants )2J("9Sn, 'H)), determined from 'H NMR spectra, gave estimates of C-Sn-C angles in Me,SnL in the range 128-136 O in methanol and aqueous solutions, which correspond to values from Il9Sn Mossbauer AE parameters (129.6-133.8 "). The structural relationship of R2SnL molecules in the solid state and in solution phase has been discussed.

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Synthesis, characterization and in vitro antitumor activity of dimethyl-, diethyl, and di-t-butyl-tin(IV) derivatives of substituted salicylic acids
✍ Mohammed BouΓ’lam; Rudolph Willem; Monique Biesemans; Marcel Gielen πŸ“‚ Article πŸ“… 1991 πŸ› John Wiley and Sons 🌐 English βš– 551 KB

The synthesis of dimethyl-, diethyl-and/or di-tbutyl-tin(1V) derivatives of substituted salicylic acids of the type a, (X-Y-2-OH-C6H,C00) , 3-CH30; H, 5-CH30; 3-CH3, 6-(CH,),CH; 3,5-[(CH3)2CH]2 and 4,S-benzo) and b {[R2(X-Y-2-OH-C6H,COO)Sn]zO}2 (X, Y = H, 3,5-[(CH3),CH], and 4,S-benzo) is reported.