50653-04-8Relevant academic research and scientific papers
Controlling the White-Light Generation of [(RSn)4E6]: Effects of Substituent and Chalcogenide Variation
Dornsiepen, Eike,Dobener, Florian,Chatterjee, Sangam,Dehnen, Stefanie
supporting information, p. 17041 - 17046 (2019/11/11)
Adamantane-type organotin chalcogenide clusters of the general composition [(RT)4S6] (R=aromatic substituent, T=Si, Ge, Sn) have extreme non-linear optical properties that lead to highly directional white-light generation (WLG) upon irradiation with an IR laser diode. However, the mechanism is not yet understood. Now, a series of compounds [(RSn)4E6] (R=phenyl, cyclopentadienyl, cyclohexyl, benzyl, CH2CH2(C6H4)CO2Et; E=S, Se), were prepared, characterized, and investigated for their nonlinear optical properties. With the exception of crystalline [(BnSn)4S6], all these compounds exhibit WLG with similar emission spectra; slight blue-shifts are observed by introduction of cyclopentadienyl substituents, while the introduction of Se in the inorganic core can provoke a red-shift. These investigations disprove the initial assumption of an aromatic substituent being a necessary precondition; the precondition seems to be the presence of (cyclic) substituents providing enough electron density.
Disproportionation reactions within the series of coordinated monoorganostannanes
Airapetyan,Petrosyan,Gruener,Zaitsev,Arkhipov,Korlyukov
, p. 241 - 248 (2013/11/19)
Interaction of monoorganotin trichlorides (RSnCl3, R = Ph, Vin, All, Bn and c-Pr) with O-TMS-amides of 2-hydroxycarboxylic acids afforded a number of mononuclear and binuclear organotin complexes (2a-j). These organotin complexes disproportionate into diorganostannanes and inorganic coordination compounds containing two O,O-chelated ligands (3a-c). All the complexes were characterized by multinuclear NMR spectroscopy in solution and X-ray diffraction in crystalline state (2a, 2b, 2j, 3b, 3c). It was found that disproportionation reaction proceeded only for very well dissolved substances in concentrated solutions upon heating. The tendency for disproportionation depends on the nature of a substituent and decreases as follow: Vin ≈ Allyl > Bn > Ph ≈ c-Pr >> Alk. It is believed that the key step of the mechanism of disproportion reaction is a ligand exchange, which is possible only in the case of binuclear complexes acting as intermediate compounds.
