TY  - JOUR
AB  - The title compound 2 can be synthesized either by reaction of ([C5H5SiMe2SiMe2C5H5]2- 2 Li+) with XSiMe2SiMe2X or by an intermolecular nucleophilic substitution reaction between two molecules of ([XSiMe2SiMe2C5H5]- Li+). Isomers of 2 with allylic hydrogen atoms arise from silatropic rearrangements and therefore show "cyclopentadiene reactivity". Reaction of the monoanion of 2 with FeCl2 yields the ferrocene 4. From the reaction of the dianion of 2 with Me5C5RuCl, the binuclear ruthenium complex 7 with Si - Si bridges in 1,2-position can be isolated; reactions with FeCl2 or Me5C5Fe(acac), with Me5C5GeCl, with SnCl2, and with PbCl2, lead to the metallocenes 6, 7, 8, and 9; in all these complexes the disilane bridges are in 1,2-position. The binuclear cobalt complex 10, in which the cyclopentadienyl rings are connected with each other by disilane bridges in 1,3-position, can be synthesized by the reaction of 2 with Co2(CO)8. The results of single-crystal X-ray structure analyses of 6 and 10 are presented. The possible conformations of the dianion of 2 are discussed.
DA  - 1991
DO  - 10.1002/cber.19911241103
KW  - 13
KW  - 14-Tetrasiladispiro[4.2.4.2]tetradeca-1
KW  - 3
KW  - 9
KW  - 1-1tetraene derivatives
KW  - Metallocenes
KW  - 7
KW  - 6
LA  - ger
IS  - 11
M2  - 2391
PY  - 1991
SN  - 0009-2940
SP  - 2391-2399
T2  - Chemische Berichte
TI  - Synthese von 6,6,7,7,13,13,14,14-Octamethyl-6,7,13,14-tetrasiladispiro[4.2.4.2]-tetradeca-1,3,9,11-tetraen und sein Einsatz in der [pi]-Komplexchemie von p- und d-Block-Elementen
UR  - https://nbn-resolving.org/urn:nbn:de:0070-bipr-4995
Y2  - 2024-11-22T06:16:24
ER  -