Syntheses and Spectral Properties of Two Complexes of Isonitrosoacetylacetone- N -arylimine and Crystal Structure of PdCl(C6H5-IAI)(C6H5NH2)

Abstract

Abstract: Two complexes of isonitrosoacetylacetone-N-arylimine, PdCl(C₆H₅—IAI)(C₆H₅NH₂)(1) and PdCl( p-CH₃C₆H₄—IAI)( p-CH₃C₆H₄NH₂)(2), were synthesized and characterized by IRand Raman spectroscopy. Complex 1 crystallizes in orthorhombic system, space group Pca 21, with parameters a =1.8587(4) nm, b =0.9380(2) nm, c =2.1237(4) nm, V =3.702(1) nm³, D_c=1.572 g/cm³, Z =8, F (000)=1760 , μ =1.160 mm^-1 . The final R₁ value is 0.0271 for 3592 observed reflections with I≥2σ(I) . The Pd(Ⅱ) ion has a distorted square-planar PdN₃Cl coordination composed of imino-nitrogen and oximo-nitrogen from the Schiff base ligand, amino-nitrogen from aniline and chlorine anion. The oxime group of the Schiff base ligand is coordinated to the Pd(Ⅱ) through its oximo-nitrogen atom, but not its oximo-oxygen-atom. The ν_C=O and ν_C=N bands display a shift to lower frequencies and ν_N-O bands to higher frequencies in IRand Raman spectra. There are π-π^* transition and d-π^* charge transfer transition in electronic spectra.

Key words: Pd complexes, Isonitrosoacetylacetoneimine, Schiff base, Crystal structure

CLC Number:

O614.33

TrendMD:

FENG Yun-Long, LIU Shi-Xiong . Syntheses and Spectral Properties of Two Complexes of Isonitrosoacetylacetone- N -arylimine and Crystal Structure of PdCl(C₆H₅-IAI)(C₆H₅NH₂)[J]. Chem. J. Chinese Universities, 2000, 21(10): 1455.

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Syntheses and Spectral Properties of Two Complexes of Isonitrosoacetylacetone- N -arylimine and Crystal Structure of PdCl(C₆H₅-IAI)(C₆H₅NH₂)

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