✍ Scribed by Carlos Camacho-Camacho; Hugo Tlahuext; Heinrich Nöth; Rosalinda Contreras
No coin nor oath required. For personal study only.
Two new dibenzobicyclic penta-and hexacoordinated tin compounds (1-2) were prepared, derived from bis (2-hydroxy-3,5-di-tert-butylphenol)imine and dichloro-dimethylstannane and trichloro-n-butylstannane, respectively. Each compound is an example of two different coordination forms of the ligand. The crystalline complexes have been characterized by magnetic moment, infrared and mass spectrometry, elemental analysis, and X-ray diffraction studies. Compound 1 crystallized in the monoclinic system, space group P2 1 /n; it contains a fivecoordinated trigonal bipyramidal tin atom with methyl groups in equatorial positions and a planar dibenzobicyclic ring. It is a paramagnetic compound (l eff ס 1.59 l B ) due to the radical dianion nature of the ligand. Compound 2 crystallized also in the monoclinic system, space group P2 1 /c; it contains a six-coordinated tin atom with an octahedral geometry; the dibenzobicyclic ring is planar, and the chlorine atoms are in trans positions. It is diamagnetic with a delocalized monoanion structure of the ligand. ᭧ 1998
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