5,5′-Selenobis(2-hydroxybenzaldehyde)
نویسندگان
چکیده
In the title mol-ecule, C(14)H(10)O(4)Se, the dihedral angle between the two benzene rings is 74.6 (1)°. Both hy-droxy-benzaldehyde groups form intra-molecular O-H⋯O hydrogen bonds. In the crystal, pairs of mol-ecules are linked by pairs of weak C-H⋯π(arene) inter-actions, forming centrosymmetric dimers. In addition, mol-ecules are linked by π-π stacking inter-actions, with a centroid-centroid distance of 3.785 (2) Å, forming chains along the c axis.
منابع مشابه
3-Chloromethyl-2-hydroxybenzaldehyde
In the title compound, C(8)H(7)ClO(2), the hydroxyl and aldehyde groups are co-planar with the benzene ring [maximum deviation 0.018 (3) Å], and the Cl-C-C plane is almost perpendicular to the benzene ring [dihedral angle 83.7 (2)°]. An intra-molecular O-H⋯O hydrogen bond occurs between the hydroxyl and aldehyde groups.
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In the title compound, C(8)H(8)ClN(3)OS, the whole mol-ecule assumes a planar structure, with an r.m.s. deviation of 0.108 (2) Å, and an intra-molecular O-H⋯N hydrogen bond generates and S(6) and ring motif. In the crystal structure, each of two pairs of inter-molecular N-H⋯S hydrogen bonds connects two mol-ecules, forming inversion dimers with R(2) (2)(8) motifs.
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In the title mol-ecule, C15H22O2, there is an intra-molecular hydrogen bond involving the hy-droxy and aldehyde groups and forming an S(6) ring. The mean plane of the non-H atoms of this ring [(H)O-C C-C=O, with a maximum deviation of 0.013 (1) Å] are essentially coplanar with the benzene ring, forming a dihedral angle of 2.29 (8)°.
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The mol-ecule of the title compound, C(7)H(5)BrO(2), is almost planar (r.m.s. deviation from the plane of all the non-H atoms = 0.0271 Å) and displays intra-molecular O-H⋯O hydrogen bonding between the phenol group and the aldehyde O atom. Packing is directed by weak inter-molecular C-H⋯Br inter-actions and π-stacking between nearly parallel mol-ecules [dihedral angle = 5.30 (6)° and centroid-c...
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THE TITLE COMPOUND [SYSTEMATIC NAME: N,N-dieth-yl({[(diethyl-carbamothio-yl)sulfan-yl]selan-yl}sulfan-yl)carbothio-amide], C(10)H(20)N(2)S(4)Se, crystallizes in a new form in the space group Pca2(1): the previously reported polymorph crystallizes in the space group P2(1)2(1)2(1). The new phase contains two independent mol-ecules in the asymmetric unit. The Se atoms are tetra-coordinated, with a...
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