Metallampullen als Mini-Autoklaven: Synthese und Kristallstrukturen der Ammoniakate [Al(NH3)4Cl2][Al(NH3)2Cl4] und (NH4)2[Al(NH3)4Cl2][Al(NH3)2Cl4]Cl2

✍ Scribed by Stephan Bremm; Gerd Meyer

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: German
• Weight: 112 KB
• Volume: 627
• Category: Article
• ISSN: 0372-7874
• DOI: 10.1002/1521-3749(200103)627:3<407::aid-zaac407>3.0.co;2-a

✦ Synopsis

Inhaltsu È bersicht. Die Salze [Al(NH 3 ) 4 Cl 2 ] + [Al(NH 3 ) 2 Cl 4 ] ± º AlCl 3 ´3 NH 3 (1) und (NH 4 + ) 2 [Al(NH 3 ) 4 Cl 2 ] + [Al(NH 3 ) 2 -Cl 4 ] ± (Cl ± ) 2 ºAlCl 3 ´3 NH 3 ´(NH 4 )Cl (2) entstehen in einkristalliner Form bei der Umsetzung von Aluminium bzw. AlCl 3 mit (NH 4 )Cl in verschweiûten Monel-Ampullen. Die Kristallstruktur von 1 wurde erneut bestimmt [triklin, P-1; a = 574,16(10); b = 655,67(12); c = 954,80(16) pm; a = 86,41(2); b = 87,16(2); c = 84,89(2)°], jene von 2 erstmals [monoklin, I2/m; a = 657,74(12); b = 1103,01(14); c = 1358,1(3) pm; b = 103,24(2)°]. Metal Ampoules as Mini-Autoclaves: Syntheses and Crystal Structures of [Al(NH 3 ) 4 Cl 2 ][Al(NH 3 ) 2 Cl 4 ] and (NH 4 ) 2 [Al(NH 3 ) 4 Cl 2 ][Al(NH 3 ) 2 Cl 4 ]Cl 2 Abstract. The salts [Al(NH 3 ) 4 Cl 2 ] + [Al(NH 3 ) 2 Cl 4 ] ± ºAlCl 3 3 NH 3 (1) and (NH 4 + ) 2 [Al(NH 3 ) 4 Cl 2 ] + [Al(NH 3 ) 2 Cl 4 ] ± (Cl ± ) 2 º AlCl 3 ´3 NH 3 ´(NH 4 )Cl (2) have been obtained as single crystals during the reactions of aluminum and aluminum trichloride, respectively, with ammonium chloride in sealed Monel metal containers. The crystal structure of 1 was determined again [triclinic, P-1; a = 574.16(10); b = 655.67(12); c = 954.80(16) pm; a = 86.41(2); b = 87.16(2); c = 84.89(2)°], that of 2 for the first time [monoclinic, I2/m; a = 657.74(12); b = 1103.01(14); c = 1358.1(3) pm; b = 103.24(2)°].