Synthesis and Structure of Di- and Triferriostibonium Salts of the Type
[Fp
2SbPh
2]
2FeX
4and [Fp
3SbR]
2FeX
4(Fp = CpFe(CO)
2, R = Ph, Cl; X = Cl, Br, I)
Ingo-Peter Lorenza, Rudolf Schneidera, Heinrich Nötha, Kurt Polborna, and Joachim Breunigb
a Department Chemie der Ludwig-Maximilians Universität München, Butenandtstrasse 5Ð13, 81377 München, Germany. Fax: 00 49(0)89/21 80-78 67. E-mail: ipl@cup.uni-muenchen.de
b Institut für Anorganische Chemie, Universität Bremen, Postfach 33 04 40, 28334 Bremen, Germany
Herrn Professor Dr. H. P. Fritz gewidmet
Z. Naturforsch.56b, 671Ð679 (2001); received May 14, 2001 Ferriostibonium Salts, Organometallated Antimony, Silyl Method
The reaction of Ph2SbSiMe3 with CpFe(CO)2X (X = Cl, Br) leads to the formation of the diphenyldiferriostibonium salts [{CpFe(CO)2}2SbPh2]2FeX4, whereas PhSb(SiMe3)2and CpFe(CO)2Cl react to give the phenyltriferriostibonium salt [{CpFe(CO)2}3Sb]2FeCl4. Sb(SiMe3)3 reacts with CpFe(CO)2X (X = Cl, Br) to yield the halogenotriferriostibonium salts [{CpFe(CO)2}3SbX]2FeX4. The chloro derivative can also be obtained: from SbCl3with {CpFe(CO)2}2 or Na[CpFe(CO)2], and from SbCl5 and Na[CpFe(CO)2]. The compounds have been characterized by spectroscopic (IR, NMR, MS), analytical (C, H) and X-ray dif- fraction investigations ([{CpFe(CO)2}2SbPh2]2FeBr4, [{CpFe(CO)2}3SbPh]2FeCl4,
[{CpFe(CO)2}3SbCl]2FeCl4).
