Gaertner Stefanie, Korber Nikolaus
Institut für Anorganische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany.
Acta Crystallogr Sect E Struct Rep Online. 2011 May 1;67(Pt 5):m613-4. doi: 10.1107/S1600536811013997. Epub 2011 Apr 22.
The crystal structure of the title compound, poly[[(4,7,13,16,21,24-hexa-oxa-1,10-diaza-bicyclo-[8.8.8]hexa-cosa-ne)rubidium] [[(1,4,7,10,13,16-hexa-oxacyclo-octa-deca-ne)rubidium]di-μ-rubidium-μ-nona-stannide] penta-ammonia], {[Rb(C(18)H(36)N(2)O(6))][Rb(3)Sn(9)(C(12)H(24)O(6))C(12)H(24)O(6))]·5NH(3)}(n) represents the first ammoniate of a Zintl anion together with two different chelating substances, namely 18-crown-6 and [2.2.2]-cryptand. The involvement of these large mol-ecules in the crystal structure of [Rb(18-crown-6)][Rb([2.2.2]-cryptand)]Rb(2)Sn(9)·5NH(3) leads to the formation of a new structural motif, namely one-dimensionally extended double strands running parallel to [100] and built by Sn(9) (4-) cages and Rb(+) cations. The double strands are shielded by 18-crown-6 and [2.2.2]-cryptand. The cations are additionally coordin-ated by ammonia mol-ecules. One of the four independent Rb(+) cations is disordered over two sets of sites in a 0.74 (2):0.26 (2) ratio.
标题化合物聚[[(4,7,13,16,21,24-六氧杂-1,10-二氮杂双环-[8.8.8]二十六烷)铷][[(1,4,7,10,13,16-六氧杂环十八烷)铷]二-μ-铷-μ-九锡化物]五氨]，{[Rb(C₁₈H₃₆N₂O₆)][Rb₃Sn₉(C₁₂H₂₄O₆)C₁₂H₂₄O₆)]·5NH₃}ₙ代表了一种Zintl阴离子与两种不同螯合剂（即18-冠-6和[2.2.2]-穴醚）形成的首个氨合物。这些大分子参与到[Rb(18-冠-6)][Rb([2.2.2]-穴醚)]Rb₂Sn₉·5NH₃的晶体结构中，导致形成了一种新的结构基序，即平行于[100]方向一维延伸的双链，由Sn₉(4-)笼和Rb⁺阳离子构成。双链被18-冠-6和[2.2.2]-穴醚屏蔽。阳离子还与氨分子配位。四个独立的Rb⁺阳离子中的一个在两组位置上无序分布，比例为0.74 (2):0.26 (2)。
