Über die Chloride des zweiwertigen Molybdäns, Wolframs und Tantals. III. Mitteilung. Die Derivate des 3‐Tantal‐6‐chlorides

Abstract

und HELLMUT FEIT.~) Es wurde in der ersten Mitteilung2) gezeigt, da6 durch die Einwirkung metallischer Reduktionsmittel auf Tantalpentachlorid ein schwarzgriines Reduktionsprodukt entsteht, welches sich in waBriger Salzsaure mit griiner Farbe lost. Aus den weitgehend eingeengten salzsauren Losungen scheidet sich die Verbindung HTa,Cl, .4 H,O ab, die wir in Analogie mit der vollig entsprechenden Verbindung des zweiwertigen Molybdans als Chlorosaure des zweiwertigen Tantals auffa6ten.

Rates and Mechanisms of Substitution in Inorganic Complexes in Solution.

“…The chemical behavior (174) suggests that a polynuclear form persists in solution. The chemical behavior (174) suggests that a polynuclear form persists in solution.…”

Hexanuclear Niobium Cluster Compounds with Protonated N‐Base Cations

“…[ M 6 Cl i 12 Cl a 6 ] n – anions ( M = Nb or Ta, Cl i : inner , edge‐bridging chloride ions, Cl a outer, apical chloride ions, n = 4, 3, 2) and protonated (acidic) counter cations were first published as early as 1924. Lindner and Feit reported several trinuclear tantalum and molybdenum cluster compounds with pyridinium cations . Later, it was realized that the metal atom core of the anions of these cluster compounds are hexanuclear with octahedral shape.…”

“…Lindner and Feit reported several trinuclear tantalum and molybdenum cluster compounds with pyridinium cations. [2] Later, it was realized that the metal atom core of the anions of these cluster compounds are hexanuclear with octahedral shape. The formulas of the Ta compounds were corrected to be [Py-H] 2 [Ta 6 Cl 18 ], and [Py-H] 2 [Ta 6 Cl 12 Br 6 ], respectively (Py = pyridine).…”

Some polynuclear tantalum halides and their oxidized derivatives

“…Work done by Lindner and Feit (6,7) in 1922 and 1924 seemed to contradict the findings reported by Ruff and Thomas. They prepared a lower tantalum chloride by reducing tantalum(V) chloride with metallic lead at 600° under a stream of nitrogen.…”