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The complex molecule in the title compound, [NiBr2(C36H40N2)], has mirror symmetry. The NiII atom and two Br atoms are located on the mirror plane. The NiII atom is four-coordinated by the two Br atoms and two N atoms from an N,N′-bis(2,6-diethyl-4-phenyl­phen­yl)butane-2,3-di­imine ligand in a distorted tetra­hedral geometry. The dihedral angle formed between the two adjacent benzene rings is 47.1 (1)°.

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In the title compound, C36H36N2, a product of the condensation reaction of 2,3-dimethyl-6-phenyl­vinyl­benzenamine and 2,3-butane­dione, the complete mol­ecule is generated by the application of an inversion centre. The central C-C bond in the 1,4-di­aza­butadiene fragment is trans-configured and situated about the inversion center. The dihedral angle between the ring attached to N and the 1,4-di­aza­butadiene plane is 78.24 (36)°, while the 1,4-di­aza­butadiene plane makes an angle of 30.71 (26)° with the phenyl ring.

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The title compound, C30H28N2, is a product of the condensation reaction of 2-methyl-4-phenyl­aniline and butane-2,3-dione. The mol­ecule lies on a crystallographic inversion centre. The C=N bond has an E conformation. The dihedral angle between the two benzene rings of the 4-phenyl-2-methyl­phenyl group is 29.19 (76)°. The 1,4-di­aza­butadiene plane makes an angle of 70.1 (10)° with the N-bonded methyl­phenyl ring and an angle of 81.08 (97)° with the terminal phenyl group.
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