title: CpPEt2As4-An Organic-Substituted As4Butterfly Compound.
abstract: CpPEt2As4(CpPEt=C5(4-EtC6H4)5) (1) is synthesized by the reaction of CpPEt.radicals with yellow arsenic (As4). In solution an equilibrium of the starting materials and the product is found. However, 1 can be isolated and stored in the solid state without decomposition. As4can be easily released from 1 under thermal or photochemical conditions. From powder samples of CpPEt2As4, yellow arsenic can be sublimed under rather mild conditions (T=125 °C). A similar behavior for the P4-releasing agent was determined for the related phosphorus compound CpBIG2P4(2; CpBIG=C5(4-nBuC6H4)5). DFT calculations show the importance of dispersion forces for the stability of the products.
authors.affiliation: Institute of Inorganic Chemistry, University of Regensburg, Universitätsstrasse 31, 93040, Regensburg, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Heinl
authors.affiliation: Institute of Inorganic Chemistry, University of Regensburg, Universitätsstrasse 31, 93040, Regensburg, Germany.
authors.forename: Gábor
authors.initials: G
authors.lastname: Balázs
authors.affiliation: Institute of Inorganic Chemistry, University of Regensburg, Universitätsstrasse 31, 93040, Regensburg, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Stauber
authors.affiliation: Institute of Inorganic Chemistry, University of Regensburg, Universitätsstrasse 31, 93040, Regensburg, Germany.
authors.forename: Manfred
authors.identifier: 0000-0003-2182-5020
authors.initials: M
authors.lastname: Scheer
keywords: butterfly complexes; fragmentation; radical activation; white phosphorus; yellow arsenic