Amides as Ligands. I. Metallic Complexes of N,N-Dimethylacetamide

Bull, William E.; Madan, Stanley K.; Willis, Joseph E.

doi:10.1021/ic50006a016

Cited by 131 publications

(39 citation statements)

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“…Les monocristaux transparents, et incolores du dichlorobis-(N,N-dim6thylac6tamide)zinc ont 6t6 pr6-par6s d'apr6s Bull et al (1963). L'6tude radiocristallographique pr61iminaire effectu6e au moyen d'une chambre de pr6cession montre que les cristaux de ZnCI2(DMA)2 appartiennent au syst6me orthorhombique et les extinctions syst6mati-ques relev6es dans l'espace r6ciproque (h00, 0k0, et 00l pour les valeurs impaires de h, k et l, respectivement) conduisent au groupe spatial P212~21 (N ° 19).…”

Section: Partie Exp6rimentaleunclassified

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Structure cristalline du dichlorobis(N,N'-diméthylacétamide)zinc(II)

Herceg¹,

Fischer²

1974

Acta Crystallogr Sect B

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The crystals of dichlorobis-(N,N-dimethylacetamide)zinc(II), ZnCI2(C4H9ON)2, are orthorhombic, P2~2~2~, with the lattice parameters a = 9.922 (2), b = 17.797 (3), c= 8.005 (2) A, Z= 4. Intensity data have been measured on a Picker FACS-1 diffractometer with Mo Ka radiation (graphite monochromator). The structure has been solved by the heavy-atom method and refined by the full-matrix leastsquares procedure to the discrepancy index R=0-052 (Rw=0"067). Two oxygen atoms from N,N-dimethylacetamide molecules and two chlorines coordinate to zinc in a tetrahedral arrangement, Zn-O = 1-964 (7) and 1.975 (8) A, Zn-CI = 2-209 (4) and 2.220 (3) A. The dimethylacetamide ligands are roughly planar. The dichlorobis-(N,N-dimethylacetamide)zinc(II) molecules are connected in a threedimensional network by van der Waals contacts.

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Section: Partie Exp6rimentaleunclassified

“…L'aptitude du DMA pour former des compos6s de coordination avec ZnCI2 et diff6rents autres sels m6talliques a 6t6 d6crit par Bull, Madan & Willis (1963) et Carty (1966. Les donn6es cristallographiques de ZnCI2(DMA)2 ont 6t6 publi6es par Sljukid, Ribar, Gabela, Ribar, Glavag & Matkovid (1970).…”

Section: Introductionunclassified

Structure cristalline du dichlorobis(N,N'-diméthylacétamide)zinc(II)

Herceg¹,

Fischer²

1974

Acta Crystallogr Sect B

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“…On the basis of infrared and conductivity evidence, Bull et al (1) postulate that DAI.4 is coordinated to metals via the carbonyl oxygen. Other authors interpret spectral results for complexes of related amides in terms of nitrogen bonding (S, 9).…”

Section: Introductionmentioning

confidence: 99%

“…N,N-Dirnethylaceta~~lide (DlIA) is well knon-n to forrn complexes with a wide range oi metal salts (1)(2)(3)(4)(5)(6)(7). In general, metal perchlorates form complexes in which the metal ion exhibits its maximuin coordination number; La(ClO4)a.SDlIA and In(CI04)J.GDlIA are typical.…”

Section: Introductionmentioning

confidence: 99%

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Proton Magnetic Resonance and Infrared Spectra of Some Complexes of N,n-Dimethylacetamide

Carty¹

1966

Can. J. Chem.

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Proton magnetic resonance spectra of some conlplexes of In, Zn, Cd, and Sn halides and perchlorates with N,N-dimethylacetarnide (DNIA) have been measured in acetone-ds. Low field shifts of the methyl resonances of DMA on complex formation are dependent on metal and anion. The similarity of the spectra of all the complexes suggests only oxygen-coordinated DMA in solution. Infrared spectra in the range 2 000 -625 cm-I are recorded. Changes in the C-O and C-X stretching frequencies of the ligand on coordination are consistent with oxygen-bonded DiMA both in the solid complexes and in solution.

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Binary blends of poly(vinyl chloride) stabilized by lithium acetate-thermal studies

Pielichowski

1999

J. Appl. Polym. Sci.

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A series of blends of poly(vinyl chloride) (PVC) with (1) poly(methyl methacrylate) (PMMA) or (2) polyoxymethylene (POM), with lithium acetate as a stabilizing agent, was investigated by differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA), either alone or coupled with Fourier transform infrared (FTIR) spectroscopy. It was found that lithium acetate has a significant effect on the thermal properties of blends under investigation. It causes the initial decomposition temperatures to increase by about 60 -150°C for PVC-POM blends, a substantial suppression of the volatile products evolution for PVC/PMMA blends, and an improvement in the surface morphology for both polymer systems by lowering the degree of roughness. The origin of these effects was discussed by analysis of the intermolecular complexation between metal salt and PVC structural arrangements in the blends. Such interactions may lead to the formation of long-range, directional-specific structural regularities, which in turn thermally stabilize the whole system (strong interactions model).

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Amides as Ligands. I. Metallic Complexes of N,N-Dimethylacetamide

Cited by 131 publications

References 0 publications

Structure cristalline du dichlorobis(N,N'-diméthylacétamide)zinc(II)

Structure cristalline du dichlorobis(N,N'-diméthylacétamide)zinc(II)

Proton Magnetic Resonance and Infrared Spectra of Some Complexes of N,n-Dimethylacetamide

Binary blends of poly(vinyl chloride) stabilized by lithium acetate-thermal studies

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