@article {48690,
	title = {Zwitterionic disilanylium from an unsymmetrical disilene},
	journal = {Chemical Communications},
	volume = {59},
	year = {2023},
	month = {FEB },
	pages = {1669-1672},
	type = {Article},
	abstract = {<p>
	The reaction of PhC(NtBu)2SiSi(SiMe3)(3) (1) with Me3SiCH(2)Cl afforded an unsymmetrical sp(2)-sp(3) disilene, 2, with concomitant elimination of Me3SiCl. The analogous reaction with PhC(NtBu)2SiCl resulted in the oxidative addition of the C-Cl bond at the Si(II) atom (3). The reactions of 2 with sulfur and selenium led to compounds with Si=E (E=S (4) and Se (5)) double bonds. Tellurium reacted differently with 2 and furnished a zwitterionic compound, 6.</p>
},
	issn = {1359-7345},
	doi = {10.1039/d2cc06954g},
	author = {Bisai, Milan Kumar and Ajithkumar, V. S. and Raj, K. Vipin and Vanka, Kumar and Gonnade, Rajesh G. and Sen, Sakya S.}
}
@article {49139,
	title = {Zwitterionic tetrastanna(II) cyclic crown},
	journal = {European Journal of Inorganic  Chemistry},
	volume = {26},
	year = {2023},
	month = {OCT },
	type = {Article},
	abstract = {<p>
	A 12-membered zwitterionic tetrastanna(II) cycle 1 having a crown ether-like topology has been isolated from the deprotonation of 1,1 \&amp; 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.</p>
},
	keywords = {Deprotonation, Imidazole, Macrocycle, Sn-II cation, stannylene},
	issn = {1434-1948},
	doi = {10.1002/ejic.202300249},
	author = {Sahoo, Padmini and Chibde, Purva and Das, Satyabrata and Banerjee, Subhrashis and Mali, Bhupendra P. and Vanka, Kumar and Gonnade, Rajesh G. and Yildiz, Cem. B. and Majumdar, Moumita}
}
