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Synthesis and Reactions of Cyclopalladated Compounds derived from N,N'-Dialkylbenzene-1,3-dicarbaldimines 1), Butyl or Octyl> and N,N'-Dibenzylbenzene-1,3-dicarbaldimine. Crystal Structure of 1(py)4>2 (py = pyridine)

DOI: 10.1039/DT9910002669

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Journal of the Chemical Society, Dalton Transactions p. 2669 - 2676 (1991)

Update date:2022-08-11

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Authors:

Chakladar, SuklaChakladar, Sukla

Paul, ParimalPaul, Parimal

Venkatsubramanian, K.Venkatsubramanian, K.

Nag, KamalakshaNag, Kamalaksha

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Article abstract of DOI:10.1039/DT9910002669

The reactions of N,N'-dialkylbenzene-1,3-dicarbaldimines (alkyl = Et, H2L1; Bu, H2L2 or C8H17, H2L3) and N,N'-dibenzylbenzene-1,3-dicarbaldimine (H2L4) with Pd(O2CMe)2 have been studied.In all cases tetra-μ-acetato cyclopalladated compounds were obtained in which metallation had occurred at the 4,6-positions of the benzene ring.The μ-chloro analogues, , can be obtained either by reaction of the Schiff bases with Li2 or by metathesis of the acetato complexes.Bridge-splitting reactions of with pyridine (py), 4-methylpyridine, pyrazole, 3,5-dimethylpyrazole, amines, and a number of monoprotic bidendate chelating ligands, viz. acetylacetone, dibenzoylmethane and its monothio analogue, ethyl acetoacetate, salicylaldehyde, N-methylsalicylideneimine and sodium N,N-dipropyldithiocarbamate have also been investigateed.The products have been characterized by (1H) and (13)C NMR spectroscopy.The X-ray crystal structure of 1(py)4>2 has been determined which crystallizes in the triclinic space group P<*> with a = 10.889(1), b = 16.981(2), c = 10.227(1) Angstroem, α = 92.99(1), β = 93.14(1), γ = 73.65(1) deg and Z = 2; refinement led to R = 0.059 and R' = 0.062 using 3620 unique reflections with I > 3?(I).

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