Bäucker, ChristianBauch, SoerenNiewa, Rainer2023-03-302023-03-3020212073-43521841487546http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-128845http://elib.uni-stuttgart.de/handle/11682/12884http://dx.doi.org/10.18419/opus-12865We report the successful synthesis of Rb2[Mn(NH2)4] and Cs2[Mn(NH2)4] from ammonothermal conditions at 723 K and pressures above 850 bar. Both compounds were obtained single phase according to powder X-ray diffraction. The crystal structures were determined by single crystal X-ray diffraction. For Rb2[Mn(NH2)4] we have obtained the high-temperature phase. The structures are analyzed with respect to the earlier reported alkali metal amidomanganates. Upon heating in inert atmosphere Cs2[Mn(NH2)4] decomposes to manganese nitrides. IR spectroscopic results are reported.eninfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/4.0/540article2021-07-03