Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Pyridine crystallizes a cikin tsarin lu'ulu'u na orthorhombic tare da rukunin sararin samaniya Pna21 da sigogin lattice a = 1752 pm, b = 897 pm, c = 1135 pm, da kuma raka'a 16 na tsari a kowace tantanin halitta (wanda aka auna a 153 K). Don kwatanta, crystalline benzene shima orthorhombic ne, tare da rukunin sararin samaniya Pbca, a = 729.2 pm, b = 947.1 pm, c = 674.2 pm (a 78 K), amma yawan kwayoyin halitta a kowace sel shine 4 kawai. Wannan banbanci yana da alaƙa da ƙananan daidaituwa na ƙwayar pyridine ɗaya (C2v vs D6h don benzene). An san wani trihydrate (pyridine·3H2O); shi ma crystallizes a cikin tsarin orthorhombic a cikin rukunin sararin samaniya Pbca, sigogin lattice a = 1244 pm, b = 1783 pm, c = 679 pm da raka'a huɗu na tsari a kowace tantanin halitta (wanda aka auna a 223 K).  Tambaya: Nawa ne adadin raka'a a kowace tantanin halitta a cikin trihydrate?
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