1969
DOI: 10.1524/zkri.1969.128.16.229
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The crystal structure of selenourea

Abstract: Auszug Die Kristallstruktur der trigonalen Modifikation von Selenharnstoff wurde sowohl bei Raumtemperatur, als auch bei -100°C bestimmt. Die Gitterkonstanten wurden nach der Methode der kleinsten Quadrate verfeinert zu a = 15,285(5) A, c = 13,007(5) Ä bei 20°C und zu α = 15,201(5) A, c = 12,950(5) Α bei -100 °C. Es wurde in Übereinstimmung mit früheren Arbeiten die Raumgruppe Ρ 3i bzw. Ρ 32 gefunden, was neun SeC(NHa)2-Molekeln pro asymmetrische Einheit bedingt. Die Kristallstruktur wurde mit PattersonMethode… Show more

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(3 citation statements)
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“…Two crystal structures determined at 100 K (Luo & Dauter, 2017) and 173 K (Rutherford & Calvo, 1969) are both consistent with phase (i.e. space group P3 1 , Z 0 = 9) (Roszak & Katrusiak, 2021;Rutherford & Calvo, 1969). Our differential scanning calorimetry (DSC) measurements revealed a first-order phase transition at 381.0 K and a new solid selenourea phase stable below the melting point at 473 K (Fig.…”
Section: Introductionsupporting
confidence: 69%
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“…Two crystal structures determined at 100 K (Luo & Dauter, 2017) and 173 K (Rutherford & Calvo, 1969) are both consistent with phase (i.e. space group P3 1 , Z 0 = 9) (Roszak & Katrusiak, 2021;Rutherford & Calvo, 1969). Our differential scanning calorimetry (DSC) measurements revealed a first-order phase transition at 381.0 K and a new solid selenourea phase stable below the melting point at 473 K (Fig.…”
Section: Introductionsupporting
confidence: 69%
“…Meanwhile, relatively little is known about the thermal behavior of SeC(NH 2 ) 2 . Two crystal structures determined at 100 K (Luo & Dauter, 2017) and 173 K (Rutherford & Calvo, 1969) are both consistent with phase (i.e. space group P3 1 , Z 0 = 9) (Roszak & Katrusiak, 2021;Rutherford & Calvo, 1969).…”
Section: Introductionmentioning
confidence: 71%
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