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trans-Bis[1,3-bis-(2-methoxy-phen-yl)triazenido]dimethano-lcadmium(II)
Abstract:
In the title compound, [Cd(C(14)H(14)N(3)O(2))(2)(CH(3)OH)(2)], each cadmium(II) center is six-coordinated by an N atom and an O atom of two 1,3-bis-(2-methoxy-phen-yl)triazene ligands and by the O atoms of two methanol mol-ecules. The distorted octa-hedral coordination geometry of the Cd atom has two N and two O atoms in the equatorial plane, and two O atoms in axial positions. The complex is stabilized by intra-molecular O-H⋯O and O-H⋯N hydrogen bonds. In the crystal structure the complexes are linked into chains via inter-molecular C-H⋯π stacking inter-actions. One of the methanol C atoms is disordered with ouccupancies of 0.7:0.3.
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When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.