Please use this identifier to cite or link to this item: http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/8168
Title: A Zwitterionic Tetrastanna(II) Cyclic Crown
Authors: SAHOO, PADMINI
CHIBDE, PURVA
DAS, SATYABRATA
Banerjee, Subhrashis
Mali, Bhupendra P.
Vanka, Kumar
Gonnade, Rajesh G.
Yildiz, Cem. B.
MAJUMDAR, MOUMITA
Dept. of Chemistry
Keywords: Deprotonation
Macrocycle
Imidazole
Sn-II cation
Stannylenel
2023-AUG-WEEK4
TOC-AUG-2023
2023
Issue Date: Oct-2023
Publisher: Wiley
Citation: European Journal of Inorganic Chemistry, 26(29).
Abstract: A 12-membered zwitterionic tetrastanna(II) cycle 1 having a crown ether-like topology has been isolated from the deprotonation of 1,1 & PRIME;-methylenediimidazole (B) with two equivalents of Sn[N(SiMe3)(2)](2) (A). The solid-state structure and NMR analysis confirms the tetrastanna(II) cycle 1 to be comprised of two stannate(II) and two stannyliumylidene ion pairs in alternating positions of the heterocycle. Computational analysis shows greater nucleophilicity at the proximally located stannate(II) centers. Nonetheless, the tetrastanna(II) cycle 1 remains poorly reactive due to engagement of Sn-II lone pair electrons in intramolecular donor-acceptor interactions. Simple deprotonation reaction between Sn[N(SiMe3)(2)](2) (A) and N-(diisopropylphenyl)imidazole (C) in equimolar ratio has led to a stannylene 2, involving the formation of a Sn-C covalent bond with the anionic imidazol-2-yl carbon center along with the release of NH(SiMe3)(2). Compound 2 exists as a dimer, where the unsubstituted ring nitrogen atom coordinated intermolecularly to the other stannylene center.
URI: https://doi.org/10.1002/ejic.202300249
http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/8168
ISSN: 1434-1948
1099-0682
Appears in Collections:JOURNAL ARTICLES

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