title: New lithium borates with bistetrazolato2-and pyrazinediolato2-ligands - potentially interesting lithium electrolyte additives.
abstract: We present a convenient synthesis of the first silylated bistetrazole via a catalyzed twin [2 + 3] cycloaddition of TMS-azide at cyanogen and its application to access bistetrazolatoborates, structurally characterized by a unique unsaturated ten-membered B2N4C4heterocyclic system. Furthermore, new borate anions with two pyrazine-2,3-diolato ligands were synthesized from tetrafluoroborate salts and structurally characterized. Their organic cation can be exchanged for Li+via cation exchange. The conceptual relation of these new salts to lithium ion battery bisoxalalatoborate additive LiBOB, a prominent solid electrolyte interface (SEI) generator, is discussed.
authors.affiliation: Fachbereich Chemie and Materials Science Centre Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35043 Marburg, Germany. JSU@staff.uni-marburg.de.
authors.forename: Lars H
authors.identifier: http://orcid.org/0000-0002-9306-5748
authors.initials: LH
authors.lastname: Finger
authors.affiliation: Fachbereich Chemie and Materials Science Centre Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35043 Marburg, Germany. JSU@staff.uni-marburg.de.
authors.forename: Alexander
authors.initials: A
authors.lastname: Venker
authors.affiliation: Fachbereich Chemie and Materials Science Centre Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35043 Marburg, Germany. JSU@staff.uni-marburg.de.
authors.forename: Fabian G
authors.initials: FG
authors.lastname: Schröder
authors.affiliation: Fachbereich Chemie and Materials Science Centre Philipps-Universität Marburg, Hans-Meerwein-Str. 4, 35043 Marburg, Germany. JSU@staff.uni-marburg.de.
authors.forename: Jörg
authors.initials: J
authors.lastname: Sundermeyer