Beiträge zur Chemie des Phosphors. 142. P6(t-Bu)5H – das erste Cyclotetraphosphan mit P2-Seitenkette |
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Authors: | M. Baudler,H. Tsch bunin |
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Affiliation: | M. Baudler,H. Tschäbunin |
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Abstract: | Contributions to the Chemistry of Phosphorus. 142. P6(t-Bu)5H – the First Cyclotetraphosphane with a P2 Side Chain The thermolysis of 1, 2-di-tert-butyldiphosphane, H(t-Bu)P? P(t-Bu)H, leads to formation of the hitherto unknown hexaphosphane P6(t-Bu)5H ( 1 ). In the first instance the iso-P5H5 derivative P5(t-Bu)4H [3] is formed, which reacts further with H2(t-BuP)2 or H2(t-BuP)3 yielding 1 . Compound 1 has been isolated in the pure state and structurally characterized as 1-(1,2-di-tert-butyldiphosphino)-2, 3, 4-tri-tert-butyl-cyclotetraphosphane, i. e. as a four-membered ring compound with a P2 side chain. Due to the chirality of the P atoms in the side chain, 1 exists as a mixture of two configurational isomers, the threo-and the erythro-form. |
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