K{sub 2}Li(NH{sub 2}){sub 3} and K{sub 2}Na(NH{sub 2}){sub 3}-synthesis and crystal structure of two crystal-chemically isotypic mixed-cationic amides

Journal Article · Fri Apr 15 04:00:00 EDT 2005 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2004.10.007· OSTI ID:20725895

Kraus, Florian ^[1]; Korber, Nikolaus ^[1]

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1. Institut fuer Anorganische Chemie der Universitaet Regensburg, Universitaetsstrasse 31, D-93053 Regensburg (Germany)

K{sub 2}Li(NH{sub 2}){sub 3} (1) was the only crystalline product obtained from the reaction of potassium with dilithium decahydro-closo-decaborate Li{sub 2}B{sub 10}H{sub 10} in liquid ammonia at -38{sup o}C. The compound crystallizes in the space group P4{sub 2}/m with Z=4, a=6.8720(5)A, c=11.706(1)A and V=552.81(7)A{sup 3}. The investigated crystal-chemically isotypic sodium compound K{sub 2}Na(NH{sub 2}){sub 3} (2) was merohedrally twinned and crystallized from a reaction mixture containing potassium and disodium decahydro-closo-decaborate Na{sub 2}B{sub 10}H{sub 10} in liquid ammonia with a=7.0044(5)A, c=12.362(1)A and V=606.48(9)A{sup 3}. The compounds contain pairs of edge sharing tetraamidolithium or tetraamidosodium tetrahedra which are interconnected by potassium ions forming three-dimensional infinite networks.

• OSTI ID: 20725895
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 4 Vol. 178; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
AMINES
AMMONIA
CRYSTALS
LITHIUM COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM IONS
SODIUM COMPOUNDS
SPACE GROUPS
SYNTHESIS
TETRAGONAL LATTICES