2021
DOI: 10.1002/ange.202017270
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Die reduzierten Nitridogermanate(III) Ca6[Ge2N6] und Sr6[Ge2N6] mit Ge‐Ge‐Bindungen

Abstract: Die ersten Nitridogermanate(III) wurden in Form der Verbindungen Ca 6 [Ge 2 N 6 ]u nd Sr 6 [Ge 2 N 6 ]m ithilfe von Natrium als Flussmittel synthetisiert und durch Rçntgenbeugung am Pulver beziehungsweise am Einkristall charakterisiert. Ca 6 [Ge 2 N 6 ]u nd Sr 6 [Ge 2 N 6 ]k ristallisieren isostrukturell zueinander und homçotyp zu Ca 6 [Cr 2 N 6 ]H in der Raumgruppe R3.S ie weisen neuartige,v oneinander isolierte,E thananaloge [Ge III 2 N 6 ] 12À-Anionen in gestaffelter Konformation auf.W iderstandsmessungen u… Show more

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“…Combinations of Ge II /N usually form bent [Ge II N 2 ] 4– units, e.g., in Ca 2 GeN 2 . Ge III in nitrides is found in [Ge 2 N 6 ] 12– units with a Ge–Ge bond, e.g., in Ca 6 [Ge 2 N 6 ], while combinations of Ge IV /N most commonly form [Ge IV N 4 ] 8– tetrahedra, analogous to nitridophosphates . The tetrahedra can be found isolated (e.g., in Sr 4 GeN 4 ), connected by shared vertices (e.g., in Ca 5 Ge 2 N 6 ) or edges (e.g., in Sr 5 Ge 2 N 6 ) or condensed to a 3D-network (e.g., in CaGeN 2 ). , Rarely, also trigonal planar [Ge IV N 3 ] 5– units (e.g., in Ba 9 (GeN 3 ) 3 N) were observed .…”
Section: Introductionmentioning
confidence: 99%
“…Combinations of Ge II /N usually form bent [Ge II N 2 ] 4– units, e.g., in Ca 2 GeN 2 . Ge III in nitrides is found in [Ge 2 N 6 ] 12– units with a Ge–Ge bond, e.g., in Ca 6 [Ge 2 N 6 ], while combinations of Ge IV /N most commonly form [Ge IV N 4 ] 8– tetrahedra, analogous to nitridophosphates . The tetrahedra can be found isolated (e.g., in Sr 4 GeN 4 ), connected by shared vertices (e.g., in Ca 5 Ge 2 N 6 ) or edges (e.g., in Sr 5 Ge 2 N 6 ) or condensed to a 3D-network (e.g., in CaGeN 2 ). , Rarely, also trigonal planar [Ge IV N 3 ] 5– units (e.g., in Ba 9 (GeN 3 ) 3 N) were observed .…”
Section: Introductionmentioning
confidence: 99%