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Indirect and Direct Grafting of Transition Metals to Siliconoids
Author(s) -
Poitiers Nadine E.,
Giarrana Luisa,
Leszczyńska Kinga I.,
Huch Volker,
Zimmer Michael,
Scheschkewitz David
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202001178
Subject(s) - transition metal , chemistry , molecule , cluster (spacecraft) , silicon , metal , crystallography , combinatorial chemistry , organic chemistry , catalysis , computer science , programming language
Unsaturated charge‐neutral silicon clusters (siliconoids) are important as gas‐phase intermediates between molecules and the elemental bulk. With stable zirconocene‐ and hafnocene‐substituted derivatives, we here report the first examples containing directly bonded transition‐metal fragments that are readily accessible from the ligato ‐lithiated Si 6 siliconoid ( 1Li ) and Cp 2 MCl 2 (M=Zr, Hf). Charge‐neutral siliconoid ligands with pending tetrylene functionality were prepared by the reaction of amidinato chloro tetrylenes [PhC(N t Bu) 2 ]ECl (E=Si, Ge, Sn) with 1Li , thus confirming the principal compatibility of such low‐valent functionalities with the unsaturated Si 6 cluster scaffold. The pronounced donor properties of the tetrylene/siliconoid hybrids allow for their coordination to the Fe(CO) 4 fragment.