Diselenastanna-, -sila- and -carbacycles with an annelated dicarba-closo-dodecaborane(12) unit

作者：Wrackmeyer Bernd^*; Hernandez Zureima Garcia; Kempe Rhett; Herberhold Max

来源：Applied Organometallic Chemistry, 2007, 21(2): 108-116.

DOI：10.1002/aoc.1181

• carborane
• selenium
• silicon
• tin
• platinum
• NMR
• X-ray

The reactions of the 1,2-diselenolato-1,2-dicarba-closo-dodecaborane(12) dianion 1 with diorganoelement(IV) dichlorides (Ph2CCl2, Me2SiCl2, Ph2SiCl2, Me2SnCl2, Ph2SnCl2) gave novel five-member heterocycles along with other products. The molecular structures of the five-member rings containing CPh2 (2) and SnPh2 (9) moieties between the selenium atoms were determined by X-ray analyses. In the case of the chlorosilanes, the analogous five-member ring containing the SiPh2 unit (4) could be identified in mixtures. The expected reaction was accompanied by rearrangement leading to formation of another five-member ring 6 containing the Ph2Si-Se-Se moiety. Oxidative addition of the five-member heterocycles containing tin (7, 9) to ethene-bis(triphenylphosphane)platinum(0) gave at low temperature the bis(triphenylphosphane)platinum(II) complexes 12 and 13, where the Pt(PPh3)(2) fragment had been inserted into one of the Sn-Se bonds. Extensive decomposition of these complexes was observed above -20 degrees C. The proposed solution-state structures of the new compounds are supported by multinuclear magnetic resonance data (H-1, B-11, C-13, Si-29, P-31, Se-77, Sn-119 and Pt-195 NMR).

• 出版日期2007-2