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[Th 10 (μ‐F 16 )(μ 3 ‐O 4 )(μ 4 ‐O 4 )(NH 3 ) 32 ](NO 3 ) 8 ·19.6 NH 3 – the Largest Thorium Complex from Solution known to Date
Author(s) -
Woidy Patrick,
Kraus Florian
Publication year - 2014
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201400138
Subject(s) - thorium , tetragonal crystal system , crystallography , ammonia , crystal structure , chemistry , solvent , materials science , uranium , organic chemistry , metallurgy
Abstract . The reaction of K 2 Th(NO 3 ) 6 and UF 4 with liquid ammonia as a solvent leads on air to planar colorless crystals of ditriakontaammine hexadeca‐μ‐fluorido tetra‐μ 3 ‐oxido tetra‐μ 4 ‐oxido decathorium(IV) octanitrate ammonia (1/19.6), [Th 10 F 16 O 8 (NH 3 ) 32 ](NO 3 ) 8 · 19.6 NH 3 ( 1 ). The compound crystallizes in the tetragonal space group P $\bar{4}$ 2 1 c (no. 114) with a = 18.4167(2), c = 14.7920(4) Å, and V = 5017.1(2) Å 3 at 123 K with Z = 2. The crystal structure shows the presence of a decanuclear thorium core [Th 10 O 4 ] 32+ similar to an “inverse” P 4 O 10 or like 1,3,5,7‐tetramethyladamantane. Such a complex seems to be the largest thorium complex reported so far – a finding that is of great importance for the knowledge of actinoid speciation in solutions.