Macrocycles containing 1,1’-ferrocenyldiselenolato ligands on group 4 metallocenes
Sanchez-Perez, Clara; Knapp, Caroline E.; Karjalainen, Minna M.; Oilunkaniemi, Raija; Carmalt, Claire J.; Laitinen, Risto S. (2018-03-12)
Sanchez-Perez, C., Knapp, C., Karjalainen, M., Oilunkaniemi, R., Carmalt, C., Laitinen, R. (2018) Macrocycles containing 1,1′-ferrocenyldiselenolato ligands on group 4 metallocenes. Dalton Transactions, 47 (15), 5415-5421. doi:10.1039/C8DT00300A
© The Royal Society of Chemistry 2018. Open Access Article. Published on 12 March 2018. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licenc
https://creativecommons.org/licenses/by-nc/3.0/
https://urn.fi/URN:NBN:fi-fe2018060825580
Tiivistelmä
Abstract
Macrocyclic [Fe(η⁵-C₅H₄Se)₂M(η⁵-C₅H₄R)₂]₂ [M = Ti (1), Zr (2), Hf (3), R = H; and M = Zr (4), Hf (5), R = tBu] were prepared and characterized by ⁷⁷Se NMR spectroscopy and the crystal structures of 1–3 and 5 were determined by single-crystal X-ray diffraction. The crystal structure of 4 is known and the complex is isomorphous with 5. 1–5 form mutually similar macrocyclic tetranuclear complexes in which the alternating Fe(C₅H₄Se)₂ and M(C₅H₄R)₂ centers are linked by selenium bridges. The thermogravimetric analysis (TGA) of 1–3 under a helium atmosphere indicated that the complexes undergo a two-step decomposition upon heating. The final products were identified using powder X-ray diffraction as FexMSe₂, indicating their potential as single-source precursors for functional materials.
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