Zur Komplexchemie von Cyclopentadienyl-Liganden mit Oligoethylenglycolether-Tentakeln

Siemeling U, Neumann B, Stammler H-G (1993)
Chemische Berichte 126(6): 1311-1316.

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Journal Article | Published | German
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On the Complex Chemistry of Cyclopentadienyl Ligands with Oligoethylene Glycol Ether Tentacles: The potassium cyclopentadienides KCp'[SiMe2(OCH2CH2)m-OCH3]n (2) react with trimethyltin chloride to give the respective stannanes Me3SnCp'[SiMe2(OCH2CH2)mOCH3]n(3a-e). Reaction of 2a-e with iron(II) chloride affords the ferrocenes Fe{Cp'[SiMe2(OCH2CH2)mOCH3]n}2 (4, a)-,e ), which are soluble in solvents of all polarities. 4a-d were investigated with respect to their ability to act as podands for alkaline metal cations. 4c, d prove to be much better podants than 4a, b; 4a,c show a certain selectivity for K+, 4b, d show a preference for Cs+. Without rigorous exclusion of moisture, 4e yields the tetrasiladioxa[3](1,1')[3](3,3')ferrocenophane 5 upon prolonged standing at room temperature. The structure of 5 was determined by a single-crystal X-ray diffraction study. The molecule is essentially unstrained with the cyclopentadienyl rings being exactly parallel to each other; the distance between the iron atom and the ring centroid is 165 pm.
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Siemeling U, Neumann B, Stammler H-G. Zur Komplexchemie von Cyclopentadienyl-Liganden mit Oligoethylenglycolether-Tentakeln. Chemische Berichte. 1993;126(6):1311-1316.
Siemeling, U., Neumann, B., & Stammler, H. - G. (1993). Zur Komplexchemie von Cyclopentadienyl-Liganden mit Oligoethylenglycolether-Tentakeln. Chemische Berichte, 126(6), 1311-1316.
Siemeling, U., Neumann, B., and Stammler, H. - G. (1993). Zur Komplexchemie von Cyclopentadienyl-Liganden mit Oligoethylenglycolether-Tentakeln. Chemische Berichte 126, 1311-1316.
Siemeling, U., Neumann, B., & Stammler, H.-G., 1993. Zur Komplexchemie von Cyclopentadienyl-Liganden mit Oligoethylenglycolether-Tentakeln. Chemische Berichte, 126(6), p 1311-1316.
U. Siemeling, B. Neumann, and H.-G. Stammler, “Zur Komplexchemie von Cyclopentadienyl-Liganden mit Oligoethylenglycolether-Tentakeln”, Chemische Berichte, vol. 126, 1993, pp. 1311-1316.
Siemeling, U., Neumann, B., Stammler, H.-G.: Zur Komplexchemie von Cyclopentadienyl-Liganden mit Oligoethylenglycolether-Tentakeln. Chemische Berichte. 126, 1311-1316 (1993).
Siemeling, Ulrich, Neumann, Beate, and Stammler, Hans-Georg. “Zur Komplexchemie von Cyclopentadienyl-Liganden mit Oligoethylenglycolether-Tentakeln”. Chemische Berichte 126.6 (1993): 1311-1316.
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