
TY  - JOUR
A1  - Harrowfield, JM 
A1  - Peachey, BJ 
A1  - Skelton, BW 
A1  - White, AH 
T1  - Synthesis and Crystal Structure of 'Thorium Hydroxy Picrate Hexadecahydrate' ('Basic Thorium Picrate')
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1995
VL  - 48
IS  - 7
SP  - 1349
EP  - 1356
KW  - 
UR  - https://doi.org/10.1071/CH9951349 
N2  - The title compound, crystallized from the solution produced by dissolution of thorium carbonate in hot, aqueous picric acid ( Hpic , 2,4,6-trinitrophenol) as pale yellow needles, has been the subject of a room-temperature single-crystal X-ray study and found to be [( pic )(H2O)6Th(&#956;-OH)2Th(OH2)6( pic )]( pic )4.20H2O. The compound is triclinic, P&#299; , a 14.651(4), b 12.877(6), c 11.838(2) &#506;, &#945; 69.71(3), &#946; 75.93(2), &#947; 80.10(3); Z = 1 ( dimeric ) f.u .; conventional R on |F| at convergence was 0.032 for 8281 'observed' (I > 3&#963;(I)) reflections. The thorium is nine-coordinate Th (O- pic )(&#956;-O)2(OH2)6, the dimer being centrosymmetric and the coordination geometry about thorium being approximately that of a singly capped square antiprism , the capping atom (over a square face) being the slightly more remote of the bridging hydroxy groups. Th -&#956;-OH are 2.366(3), 2.381(3), Th-OH2 2.479(5)-2.534(4) and Th-O( pic ) 2.366(3) &#506;. 
ER  -

