ChemInform Abstract: Preparation and Crystal Structure of Diammonium Heptachloropentaoxotriniobate(V) (NH4)2(Nb3O5Cl7).

Abstract

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Coexistence of spin ordering on ladders and spin dimer formation in a new-structure-type compound Sr2Co3S2O3

“…mer -[Co(dien)(NO 2 ) 3 ] (dien = diethylenetriamine)19, [Co(dien) 2 ] X 3  · 2H 2 O ( X  = Cl, Br)20 and mer -[Ni(dien) 2 ][SCN] 2 21 or heteroleptic coordination by N and O in [Cr(HP 2 O 7 )(NH 3 ) 3 (H 2 O)] · 2H 2 O22. For non-complex inorganic materials, the mer -heteroleptic coordination exists in M 2 [Nb 3 O 5 X 7 ] ( M  = NH 4 , K, Rb, Cs; X  = Cl, Br) and in La 6 Ti 2 S 8 O 5 , where the octahedra are composed by a Nb 5+ (Ti 4+ ) ion surrounding by three O 2− and three X − (S 2− ) ions232425. According to powder x-ray diffraction data and theoretical calculations, mer -TaN 3 O 3 octahedera are also reported in diamagnetic γ - and δ -TaON2627.…”