@article{f2a6972604ee463c81fd3ecb5b1780a7,
title = " Lewis acid-base adducts of zwitterionic alkali metal methanides and silanides with BH 3 ",
abstract = " The synthesis, structures and spectroscopic properties of M(MeOCH 2 CH 2 OMe 2 Si) 3 C–BH 3 (M-1-BH 3 ) and M(MeOCH 2 CH 2 OMe 2 Si) 3 Si–BH 3 (M-2-BH 3 ) (M = Li, Na, K) derived from reactions of BH 3 with the alkali metal zwitterions [M(MeOCH 2 CH 2 OMe 2 Si) 3 C] (M-1) and [M(MeOCH 2 CH 2 OMe 2 Si) 3 Si] (M-2) (M = Li, Na, K), resp., are reported. X-ray analysis and DFT calculations reveal discrete zwitterionic structures with the octahedral alkali metal cations rigidly locked and charge separated from the BH 3 units via pendant donors groups. Solution experiments with the hydride acceptors B(C 6 F 5 ) 3 and [Ph 3 C] 2 [B 12 C 12 ] indicate that Na-1-BH 3 can donate hydrides to form cations of formula [Na(MeOCH 2 CH 2 OMe 2 Si) 3 C–BH 2 ] + . ",
keywords = "Borane, DFT calculation, Lewis acid-base chemistry, Methanides, Silanides, Zwitterions",
author = "Thalangamaarachchige, {Vidura D.} and Silva, {Nadeesha J.} and Unruh, {Daniel K.} and Aquino, {Adelia J.A.} and Clemens Krempner",
note = "Funding Information: We gratefully acknowledge collaborative financial support by the NSF (grant no. 1407681; Project SusChEM: IUPAC) as part of the IUPAC International Funding Call on “Novel Molecular and Supramolecular Theory and Synthesis Approaches for Sustainable Catalysis”. The authors also thank Jinchun Qiu for her assistance with FTIR. Funding Information: We gratefully acknowledge collaborative financial support by the NSF (grant no. 1407681 ; Project SusChEM: IUPAC) as part of the IUPAC International Funding Call on “Novel Molecular and Supramolecular Theory and Synthesis Approaches for Sustainable Catalysis”. The authors also thank Jinchun Qiu for her assistance with FTIR. Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",
year = "2019",
month = mar,
day = "29",
doi = "10.1016/j.tet.2019.02.011",
language = "English",
volume = "75",
pages = "1861--1864",
journal = "Tetrahedron",
issn = "0040-4020",
number = "13",
}