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Mercapto derivatives of triorganotin Y,C,Y-pincer complexes: Roleof Y,C,Y-chelating ligands in a new coordination mode of organotin compounds
Authors: Matincová Jana | Dostál Libor | Taraba Jan | Růžička Aleš | Jambor Roman
Year: 2007
Type of publication: článek v odborném periodiku
Name of source: Journal of Organometallic Chemistry
Page from-to: 3415-3423
Titles:
Language Name Abstract Keywords
cze Mercapto deriváty triorganocíničitých sloučenin obsahujících Y,C,Y-ligandy obsahují thionovou i thiolovou formu Diskutována je příprava triorganocíničitých sloučenin R2L1-2Sn obshujících N,C,N a O,C,O-ligandy L1-2(L1 = C6H3(Me2NCH2)2-2,6, L2 = C6H3(tBuOCH2)2-2,6) které stabilizují thiolovou a thionovou formu merkaptoderivátů.
eng Mercapto derivatives of triorganotin Y,C,Y-pincer complexes: Roleof Y,C,Y-chelating ligands in a new coordination mode of organotin compounds We report the use of triorganotin fragments R2L1-2Sn containing N,C,N and O,C,O-ligands L1-2(L1 = C6H3(Me2NCH2)2-2,6, L2 = C6H3(tBuOCH2)2-2,6) on stabilization of both thiol-form in R2L1-2Sn-2-SPy (2-SPy = pyridine-2-thiolate) and thione-form in R2L1-2Sn(mimt) (mimt = 1-methylimidazole-2-thiolate) of the polar groups. Treatment of ionic organotin compounds [Me2L1Sn]+[Cl] (1) and [Ph2L2Sn]+[OTf] (2) with appropriate sodium salts Na-2-SPy and Na(mimt) resulted in the isolation of Me2L1Sn-2-SPy (3), Ph2L2Sn-2-SPy (4), Me2L1Sn(mimt) (5), Ph2L2Sn(mimt) (6). While polar group 2-SPy exists in its thiol-tautomeric form in compounds 3 and 4, the second polar group (mimt) has been stabilized as the thione-tautomeric form by triorganotin fragments R2L1-2Sn in compounds 5 and 6. The products were characterized by 1H, 13C and 119Sn NMR and IR spectroscopy, ESI/MS, elemental analyses and structures of 3, 6 were determined by X-ray diffraction study. The reactivity of compound 4 containing non-coordinated nitrogen atom of 2-SPy polar group towards CuCl and AgNO3 is also reported. The reactions led to isolation of organotin compounds Ph2L2SnCl (7) and Ph2L2SnNO3 (8) as the result of polar group transfer. The mechanism of this reaction has been investigated and compounds Ph3Sn- 2-SPy (9) and Ph2L2Sn-4-SPy (10) (4-SPy = pyridine-4-thiolate) have been prepared for this purpose. thiol-thione forms, pincer compounds, organotin componds

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