caa a22 4500 467920419 CHVBK 20180406152915.0 cr unu---uuuuu 170328e20060201xx s 000 0 eng 10.1007/s00706-005-0399-3 doi (NATIONALLICENCE)springer-10.1007/s00706-005-0399-3 Isolated cyclo- Tetraarsendiide Anions: Synthesis and Crystal Structures of Bis(tetraamminelithium) tetraarsenide [Li(NH3)4]2As4, Bis(pentaamminesodium) tetraarsenide - ammonia (1/3) [Na(NH3)5]2As4 · 3NH3 and Bis[(4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo [8.8.8]hexacosan)(cesium, rubidium)] tetraarsenide - ammonia (1/2) [Cs0.35Rb0.65( 2,2,2-crypt )]2As4 · 2NH3 [Elektronische Daten] [Tobias Hanauer, Florian Kraus, Markus Reil, Nikolaus Korber] Summary.: The ammoniates [Li(NH3)4]2As4, [Na(NH3)5]2As4 · 3NH3, and [Cs0.35Rb0.65(2,2,2-crypt)]2As4 · 2NH3 (2,2,2-crypt: 4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosan) were synthesised either by direct reduction of arsenic with Li(Ca)/Na in liquid ammonia or by reaction of Rb4As6 with CsPH2 in the same solvent. Single crystals were isolated and characterised by low temperature X-ray structure analysis. All three compounds contain As42− anions of almost square planar geometry which have no contacts to metal ions. The medium As-As bond length in the putatively aromatic anions is 2.362 Å. Springer-Verlag/Wien, 2006 Keywords. Ammoniates nationallicence Arsenic nationallicence Crystal structure nationallicence Liquid ammonia nationallicence Hanauer Tobias Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany aut Kraus Florian Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany aut Reil Markus Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany aut Korber Nikolaus Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany aut Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/2(2006-02-01), 147-156 0026-9247 137:2<147 2006 137 706 https://doi.org/10.1007/s00706-005-0399-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00706-005-0399-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hanauer Tobias Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany aut NATIONALLICENCE 700 1- Kraus Florian Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany aut NATIONALLICENCE 700 1- Reil Markus Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany aut NATIONALLICENCE 700 1- Korber Nikolaus Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany aut NATIONALLICENCE 773 0- Monatshefte für Chemie / Chemical Monthly Springer-Verlag 137/2(2006-02-01), 147-156 0026-9247 137:2<147 2006 137 706 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer