Conclusions
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1.
Paramagnetic palladium(II) and platinum(II) 3,6-di-tert-butylbenzosemiquinolate complexes were prepared containing aσ,π-bonded cycloalkenyl ligand. ESR spectroscopy was used to detect the trans effect of the M-Cσ-bond in the square complexes synthesized, which is evident in the inequivalence of the protons of the 3,6-di-tert-butylbenzosemiquinolate ligand.
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2.
Pentacoordinated derivatives of palladium (II) and platinum (II) were detected for the first time by ESR spectroscopy in the substitution reactions of “spin-labeled” square planar complexes of these metals. A stable pentacoordinated paramagnetic platinum complex, (C8H12-OMe)Pt(SQ)(PPh3) was isolated as a pure compound.
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Translated from Izvestiya Alcademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1402–1408, June, 1984.
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Abakumov, G.A., Teplova, I.A., Cherkasov, V.K. et al. New Pd(II) and Pt(II) o-semiquinolate complexes containing cycloalkenyl σ,π-bonded ligands. Russ Chem Bull 33, 1291–1296 (1984). https://doi.org/10.1007/BF00949004
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DOI: https://doi.org/10.1007/BF00949004