Patel, T

Ratho, T

IACS Institutional Repository

UNIT CELL DIMENSIONS OF HYDRAZINE URANIUM(IV) FLOURIDET. RATHO ASD T. PATEL R eoional E noikbebiko Colleois, Koubkela. I ndia.{Received July 19, 1068)ABSTRACT. The Debye-aohorrer powder pattern of hydrazine uranium (IV) flouiide NaHsUFs was recorded by a Rigaku camera at room temperature. The powder data analysis shows the crystal to be orthorhombic with o =  7.941 AU, b =  6.372 AU and e =  7.478AU It contains 4 molecules per unit cell and the probable space group assigned to is P222 or Pmm2.I N T R O D U C T I O NHydrazine uranium (IV) flouride is obtainable in microcrystalline form green in colour. As it is not possible to obtain large single crystals of this substance, the powder photograph is taken. We Itave followed the usual powder method analysis by Azaroff and Buerger (1968), D’eye and Wait (1960); Henry et al, (1951) to obtain the crystallographic data.E X P E R I M E N T A LThe powder, contained in a capillary of Lindemann glass of 0.01mm. wall tliickness and 0.5 mm diameter, was irradiated by filtered CuK, (A =  1.54 AU) radiation obtained from a Machlett A-2 X-ray diffraction tube operated at 30 KV and 20 mA The pattern was recorded on the film in 12 hours using a 9 cm diameter Rigaku Camera. Tlie lines wore measured accurately and the iuterplanar distances were calculated with highest accuracy. Attempts were made to fit this data to cubic, tegragonal and hexagonal systems and were in vain. Next Lipson’s (1949) procedure was followed and a number of constant differences were found indicating the possibility that the crystal may be orthorhombic.The values of sin®(9 for the rings in the powder pattern are given in the table. Taking these values the difference diagram was drawn.It was found that all the lines in the pattern can be indexed talcing the values of A -  A*/4o» =  0.0094, B =  A®/46* =  0.0146 and 0  =  A*/4c* =  0.0106. The lattice parameters calculated from these constants are o =  7.941AU, 6 =  6.372 AU and c =  7.478 AUThe sin*5 values, indices, intensities and spacings are given in the table and the discrepancies between observed and calculated values are found to be within the permissible experimental wror.27240Unit Cell Dimensions o f N^H^UF^ 2 4 1The deiisity o f the compound was found out to be 6.391 gm/om~* and the number o f molecules per unit cell was found out to bo 4. The calculated density comes out to bo 6.4254 gm.cm-® which is well within tlio observable limit.The above results confirm the crystal to bo orthorhombic. The study of indices shows the following conditions :hid, hoi, hko, old, hoo, oho, ool—no condition.Therefore the probable space group is P222 or Pnun2.Table 1No. of lines IntensitySpacing ‘d’ observedsin^ X0IndicesObserved Caloul4ted1. m 7.73109 0.0099 0.0094 1002. vvw 6.30316 0.0149 0.0146 0103. mm 4.14726 0.0346 0.0346 1114. vvw 3.94694 0.0381 0.0376 2006. vvw 3.49340 0.0486 0.0482 2016. vvw 3.19402 0.0681 0.0684 0207. vvw 2.74999 0.0784 0.0784 1218 . vvw 2.66383 0.0842 0.0846 3009. vvw 2.49610 0.0952 0.0964 0030.0952 30110. ww 2.32021 0.1101 0.1100 0130.1102 1220.1098 31111. m 2.22690 0.1196 0.1194 11312. vw 2.12604 0.1312 0.1314 03013. w 2.06600 0.1389 0.1384 22214. w 1.98421 0.1506 0.1504 4000.1614 13115. w 1.92662 0.1607 0.1610 40116. s 1.83768 0.1766 0.1766 41117. m 1.78751 0.1856 0.1854 32218. m 1.74372 0.1960 0.1946 31319. w 1.66810 0.2158 0.2160 33020. vw 1.59320 0.2340 0.2336 04021. vvw 1.65740 0.2437 0.2442 04122. vvw 1.60971 0.2602 0.2602 5110.2604 41323. s 1.46097 0.2654 0.2650 0050.2656 22424. 8 1.43016 0.2894 0.2890 11525. VVW 1.40343 0.3010 0.3010 03426. s 1.37490 0.3136 0.3136 24227. vw 1.34695 0.3285 0.3288 3410.3290 04328. 8 1.31019 0.3454 0.3460 51329. vw 1.27356 0.3655 0.3650 06030. w 1.20843 0.4060 0.4056 1160.4068 13531. vvw 1.19466 0.4155 0.4154 40582. vs 1.17926 0.4264 0.4264 4422 4 2 T. RcUho and T. PaJtdA C K N O W L E D G M E N T STho authors express their sincere thanks to Dr. Balaram Sahoo, D ept, o f Chemistry of I . I . T . Kharagpur for supplying the chemically pure substance forinvestigationR E F E R E N C E SAzaroff, L. V. and Buerger, M. J., 1968, Powder Method, McGraw Hill Book Co. N.Y, B’oye, R. W. M. and Wait, E., 1960. X-ray Powder Photography in Inorganw Chemiotry, Butterworths Scientific Publications; London.Henry, N. F. M., Lipson, H. and Wooster, W. A., 1961, The Interpretation of X*ray Diffractio'^  ^ Photographs, Macmillan and Co. Ltd. London,Lipson. H., 1940, Acta. Cryst., 2, 4.3.

Unit Cell Dimensions of Hydrazine Uranium (IV) Flouride

http://arxiv.iacs.res.in:8080/jspui/bitstream/10821/4176/1/Unit%20cell%20dimensions%20of%20hydrazine_T%20Ratho.pdf

Unit Cell Dimensions of Hydrazine Uranium (IV) Flouride

Abstract

Similar works

Full text

Available Versions

IACS Institutional Repository