TY - JOUR AB - 1,2,3-Tris(pentamethylcyclopentadienyl)cyclotriphosphane (1) reacts with selenium to form the insertion product 2,3,4-tris(pentamethylcyclopentadienyl)selenatriphosphetane (2), which is trapped as the selenium-coordinated pentacarbonylchromium complex 4. Compound 4 is the first isolated selenatriphosphetane complex. Reaction of 2 with selenium yields 2,3-bis(pentamethylcyclopentadienyl)selenadiphosphirane (3). 3 replaces thf of Cr(CO)5thf to give the chromium complex 5. The reaction of 3 with K[Fe(CO)2Cp*] leads to the substitution product 6 and the bicyclic phosphane 7. The X-ray structures of 3 and 4 are presented. The dynamic behavior of 3-6 is discussed. DA - 1994 DO - 10.1002/cber.19941270606 KW - Selenatriphosphetanes KW - Selenadiphosphiranes KW - Molecular dynamics KW - Phosphacycles KW - Selenium compounds LA - ger IS - 6 M2 - 997 PY - 1994 SN - 0009-2940 SP - 997-1001 T2 - Chemische Berichte TI - Pentamethylcyclopentadienyl-substituiertes Selenadiphosphiran und Selenatriphosphetan: Synthese, Struktur, Dynamik und einige Reaktionen: Herrn Prof. R. Schmutzler zum 60. Geburtstag gewidmet UR - https://nbn-resolving.org/urn:nbn:de:0070-pub-17743689 Y2 - 2024-11-22T04:08:43 ER -