Dibutyl 2,2′-bipyridine-4,4′-dicarboxylate
نویسندگان
چکیده
منابع مشابه
Dibutyl 2,2′-bipyridine-4,4′-dicarboxylate
In the title compound, C(20)H(24)N(2)O(4), the mol-ecule lies on a centre of symmetry and is approximately planar (r.m.s. deviation= 0.013 Å for 26 non-H atoms). The carboxyl-ate group is inclined slightly to the neighbouring pyridine ring, forming a dihedral angle of 4.37 (2)°. The mol-ecules form stacks with an inter-planar separation of 3.547 (1) Å.
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In the title compound, C(25)H(30)N(2)O(6), the dihedral angle between the aromatic rings is 3.79 (1) Å and the N=N bond shows a trans conformation. Both butyl side chains show evidence of disorder.
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The fluorene fragment of the title compound, C(22)H(25)N, is essentially planar, with an r.m.s deviation of the five-membered ring of 0.005 (2) Å. The dihedral angle between this ring and the outer benzene rings are 1.5 (2) and 0.7 (2)° while that between the benzene rings is 2.1 (2)°. The cyano group makes an angle of 0.3 (2)° with the attached benzene ring.
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In the title mol-ecule, C(24)H(26)N(2)O(2), the two indol-2-one units, which are connected by a C=C double bond, are almost coplanar with an inter-planar angle of 6.8 (1)°. On cooling from 293 to 120 K, the space group changes from P2(1)/n to P2(1). Two intra-molecular C-H⋯O hydrogen bonds occur.
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2009
ISSN: 1600-5368
DOI: 10.1107/s1600536809003997