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Synthesis and characterization of new oxazoline-based palladacycles with bridging or terminal imidate ligands. Crystal structures of [{Pd(mu-dibromomaleimidate)(Phox)}(2)], [Pd(dibromomaleimidate)(Phox)(PPh3)] and [Pd(glutarimidate)(Phox)(PPh3)] (Phox=2-(2-oxazolinyl)phenyl))
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| Journal | POLYHEDRON |
|---|---|
| Date | Published - 25 Apr 2008 |
| Issue number | 6 |
| Volume | 27 |
| Number of pages | 8 |
| Pages (from-to) | 1699-1706 |
| Original language | English |
Abstract
The dinuclear hydroxo complex [{Pd(mu-OH)(Phox)}(2)] (1) (Phox = 2-(2-oxazolinyl)phenyl) reacts in a 1:2 molar ratio with several imidate ligands to yield new cyclometallated palladium complexes ({Pd(mu-NCO)(Phox)}(2)] containing asymmetric imidate -NCO- bridging units. [-NCO- = succinimidate (succ) (1), phtalimidate (phtal) (2), maleimidate (mal) (3), 2,3-dibromomaleimidate (2,3-diBrmal) (4) and glutarimidate (glut) (5)]. The reaction of these complexes with tertiary phosphines provides novel mononuclear N-bonded imidate derivatives of the general formula [Pd(imidate)(Phox)(PR3)] [R = Ph (a), 4-F-C6H4 (b) or CH2CH2CN (c)]. The new complexes were characterized by partial elemental analyses and spectroscopic methods (IR, FAB, H-1, C-13 and P-31). The single-crystal structures of compounds 4, 4a and 5a have been established. (C) 2008 Elsevier Ltd. All rights reserved.
- imidate complexes, cyclometallated palladium(II) complexes, 2-phenyl-2-oxazoline, X-ray study, CYCLOMETALATED PALLADIUM(II) COMPLEXES, MU-HYDROXO COMPLEX, X-RAY, PALLADACYCLOPENTADIENE COMPLEXES, MOLECULAR-STRUCTURE, OXO COMPLEXES, REACTIVITY, 2-PHENYLPYRIDINE, MONONUCLEAR, PHOSPHINE
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