Synthesis and structural characterization of organotin(IV) complexes with ferrocenyldithiophosphonate ligands

• Published in: Journal of organometallic chemistry Vol. 813; pp. 55 - 60
• Main Authors: Hernández-Galindo, María del Carmen, Moya-Cabrera, Mónica, Jancik, Vojtech, Toscano, Rubén A., Cea-Olivares, Raymundo
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-07-2016
• Subjects: Dithiophosphonates; Ferrocenyl; Tin; X-ray structure; Tin; Ferrocenyl; Dithiophosphonates; X-ray structure
• ISSN: 0022-328X; 1872-8561
• DOI: 10.1016/j.jorganchem.2016.04.005

The reaction of ammonium salts of benzylferrocenyldithiophosphonate ligands [NH4][S2P(OR)(Fc)] [R = Bz (1), 4-(iPr)-Bz (2), 4-(tBu)-Bz (3), 4-(Ph)-Bz (4), 3-(OBz)-Bz (5); Bz = benzyl, Fc = ferrocenyl] with organotin(IV) chlorides Ph2SnCl2, nBu2SnCl2 and Ph3SnCl, gave the corresponding organotin(IV) benzylferrocenyldithiophosphonates [Ph2Sn{S2P(OR)(Fc)}2] [R = Bz (6), 4-(iPr)-Bz (7), 4-(tBu)-Bz (8), 4-(Ph)-Bz (9), 3-(OBz)-Bz (10)], [nBu2Sn{S2P(OR)(Fc)}2] [R = Bz (11), 4-(Ph)-Bz (12)] and [Ph3Sn{S2P(OBz)(Fc)}] (13). Compounds 6–13 were characterized by elemental analyses, infrared, 1H, 13C{1H},31P{1H} and 119Sn{1H}NMR spectroscopy and ESI mass spectrometry, while complexes 6, 11 and 13 were also characterized by single-crystal X-ray diffraction studies. The dithiophosphonate ligands display an anisobidentate coordination mode upon interaction with the metal center. The solid-state structures of the disubstituted complexes 6 and 11 exhibit a trans arrangement for the ferrocenyl groups from the dithiophosphonate ligands.
The reaction of ammonium salts of benzylferrocenyldithiophosphonate ligands with organotin chlorides lead to organotin(IV) benzylferrocenyldithiophosphonates [R2Sn{S2P(OR′)(Fc)}2]. These compounds exhibit an anisobidentate coordination mode upon interaction with the metal center. The solid-state structures of the disubstituted complexes exhibit a trans arrangement for the ferrocenyl groups from the dithiophosphonate ligands. [Display omitted]
•New organometallic tin dithiophosphonates with bulky ligands.•There are very few organotin dithiophosphonates structurally characterized.•The presence of bulky ligands precludes the intermolecular interactions.