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- W1976754016 abstract "Abstract Bis(benzylamine)diacetylplatinum(II) (3) reacted with 2-pyridyl-functionalized hydrazones and with diacetyl dihydrazone to yield diacetyl platinum(II) complexes [Pt(COMe)2(2-pyCR NNH2)] (R = H, 4a; Me, 4b; Ph, 4c) and [Pt(COMe)2(H2NN CMe–CMe NNH2)] (5). These complexes showed weak intramolecular N–H⋯O hydrogen bonds where the hydrazone and the acetyl ligand act as H donor and H acceptor, respectively. Using hydrazones 2-pyCR NNHR′ substituted with electron-withdrawing groups R′ resulted in complexes [Pt(COMe)2(2-pyCR NNHR′)] (R/R′ = H/C6H4-p-F, 6d; Me/C6H4-p-F, 6e; H/COMe, 7a; Me/COMe, 7b; H/COPh, 7c; Me/COPh, 7d; H/CO(C6H4-p-F), 7e; Me/CO(C6H4-p-F), 7f) with stronger intramolecular N–H⋯O hydrogen bonds. The isolation of the analogous phenylhydrazone complexes (R′ = Ph) failed on this way, but reactions of the 1D coordination polymer [{Pt(COMe)2}n] (2) with phenylhydrazones resulted in the formation of the desired complexes [Pt(COMe)2(2-pyCR NNHR′)] (R/R′ = H/Ph, 6a; Me/Ph, 6b; Ph/Ph, 6c; H/C6F5, 6f). The constitution of all complexes was unambiguously confirmed analytically, spectroscopically and, in part, by single-crystal X-ray diffraction analyses. Structural and NMR parameters gave evidence that the strength of the N–H⋯O hydrogen bond is increased in the order 5 ≈ 4a–c NOH)] which have stronger (even than in type 6f/7a–f complexes) intramolecular O–H⋯O hydrogen bonds." @default.
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- W1976754016 date "2014-07-01" @default.
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- W1976754016 title "Hydrazone–diacetyl platinum(II) complexes: Substituent effect on intramolecular N–H⋯O hydrogen-bond strength" @default.
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- W1976754016 doi "https://doi.org/10.1016/j.jorganchem.2014.03.030" @default.
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