1972
DOI: 10.1107/s0567740872004728
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The crystal structure of potassium picrate: a comparison between stationary-crystal stationary-counter, densitometer, and visual data

Abstract: A comparison between three independent determinations of the crystal structure of potassium picrate is made. In one case, the stationary-crystal stationary-counter technique, with molybdenum radiation, was used to measure the intensities; in the second case, a densitometer measurement of films was employed; in the third case, the intensities were estimated visually from multiple films. The positional parameters from the three sets of data are in good agreement, with some differences in the thermal parameters. … Show more

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Cited by 35 publications
(8 citation statements)
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“…This may be explained by the increased electron density due to delocalization of the charge around the ring. Similar effects on both bond lengths and angles have been observed in potassium and ammonium picrates (Maartmann-Moe, 1969;Palenik, 1972).…”
Section: (3x)o(1)o(3 I) 2911 (5)supporting
confidence: 61%
“…This may be explained by the increased electron density due to delocalization of the charge around the ring. Similar effects on both bond lengths and angles have been observed in potassium and ammonium picrates (Maartmann-Moe, 1969;Palenik, 1972).…”
Section: (3x)o(1)o(3 I) 2911 (5)supporting
confidence: 61%
“…Fig. 5 is a stereoscopic diagram looking along the b axis from 'below' the unit cell and shows four asymmetric units related by unit-cell translations in the a and c directions and two 2BDNP moieties from molecules Palenik (1972). (e) Richards (1961).…”
Section: The Crystal Structurementioning
confidence: 99%
“…Several crystal structures of salts of picric acid with organic or metallic cations have been reported in recent years. The structures of the isomorphous anhydrous NH~-and K ÷ salts • (Maartmann-Moe, 1969;Palenik, 1972) and the monohydrated Li ÷ salt (Griffin & Coppens, 1973) are known. An article which describes the crystal structure of the red modification of T.1 ~ picrate (Herbstein, Kapon & Wielinski, 1977) also reports that Rb, Cs and red T1 ~ picrates are isomorphous and different from the isomorphous NH4 and K picrates.…”
mentioning
confidence: 99%