TY - JOUR
T1 - Magnesium Reagents Featuring a 1,1′-Bis(o-carborane) Ligand Platform
AU - Axtell, Jonathan C.
AU - Kirlikovali, Kent O.
AU - Dziedzic, Rafal M.
AU - Gembicky, Milan
AU - Rheingold, Arnold L.
AU - Spokoyny, Alexander M.
N1 - Funding Information:
We are grateful for the financial support of 3M (Non-Tenured Faculty Award) to A. M. S., the American Chemical Society Petroleum Research Fund (56562-DNI3), and the National Defense Science and Engineering Graduate Fellowship (Fellowship to R. M. D).
Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/10/25
Y1 - 2017/10/25
N2 - The synthesis of two bis(carboranyl) (bc) magnesium reagents is described. Treatment of 1,1′-bis(o-carborane) (H2-bc) or 8,8′,9,9′,10,10′,12,12′-octamethyl-1,1′-bis(o-carborane) (H2-Mebc) with Mg(nBu)2 in 1,2-dimethoxyethane (DME) affords (bc)Mg(DME)2 (1a,b) as crystalline solids. The magnesium compounds, which have been characterized by NMR spectroscopy and single-crystal X-ray crystallography in the case of 1a, serve as competent Grignard-type reagents to generate bc-containing species of tin from Me2SnCl2 (2a,b). The type of substitution of the bis(o-carboranyl) ligand framework is found to strongly affect the electronic character of the tin center, as judged by 119Sn NMR spectroscopy. The disclosed compounds, which are stable solids under an atmosphere of dry nitrogen gas at room temperature, provide a new class of bc-transfer reagents.
AB - The synthesis of two bis(carboranyl) (bc) magnesium reagents is described. Treatment of 1,1′-bis(o-carborane) (H2-bc) or 8,8′,9,9′,10,10′,12,12′-octamethyl-1,1′-bis(o-carborane) (H2-Mebc) with Mg(nBu)2 in 1,2-dimethoxyethane (DME) affords (bc)Mg(DME)2 (1a,b) as crystalline solids. The magnesium compounds, which have been characterized by NMR spectroscopy and single-crystal X-ray crystallography in the case of 1a, serve as competent Grignard-type reagents to generate bc-containing species of tin from Me2SnCl2 (2a,b). The type of substitution of the bis(o-carboranyl) ligand framework is found to strongly affect the electronic character of the tin center, as judged by 119Sn NMR spectroscopy. The disclosed compounds, which are stable solids under an atmosphere of dry nitrogen gas at room temperature, provide a new class of bc-transfer reagents.
KW - Boron
KW - Carboranes
KW - Cluster compounds
KW - Electronic structure
KW - Tin
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U2 - 10.1002/ejic.201700604
DO - 10.1002/ejic.201700604
M3 - Article
AN - SCOPUS:85031821682
SN - 1434-1948
VL - 2017
SP - 4411
EP - 4416
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 38
ER -