Inner Complex Chelates. II. Analogs and Polar Substituted Analogs of Bisacetylacetoneëthylenediimine and its Metal Chelates^1,2

Mass spectral and nuclear magnetic resonance (proton and carbon-13) study of metal complexes of quadridentate ligands derived from 1,2-diaminoethane and substituted .beta.-diketones; x-ray structure of N,N'-ethylenebis(5,5-dimethyl-4-oxohexan-2-iminato)nickel(II)

“…The major differences in the mass spectra .of the nickel(II) and copper(II) complexes are seen in other fragmentation patterns of the [M -*/2L]+ ions (Figure 2). The nickel(II) complexes show large peaks arising from the further loss of RCO coupled with H migration to give a fragment such as 8 (Figure 2), while the copper(II) complexes show large peaks associated with the loss of CuH which is presumably related to the known stability27 of this species. For the copper complexes, it is postulated that a fragment of structure 9 is produced.…”

“…3 every 100 reflections (0-60), (0, 0, 12), (7)(8)(9)(10)(11) Small linear decrease; 1.8, 0.9, and 0.4%, respectively; no correction applied 3952 1335 0.002 0.017 0 The reflection scan range is asymmetric; the term is the 26 angular separation of the Ka, and Ka. components of the diffracted beam.…”

Chelate polymers. IV. siloxanes functionalized with chelating groups derived from hydroxy-ketones, their metal complexes and some polymers

“…The reaction occurred in methanol at room temperature, as in the case of the organic amine. 17,18 The Schiff base formation was verified by elemental (Table 1) and spectral (IR, UV-Vis and 1 H NMR) analyses. The differences between the elemental analysis values found and calculated are in agreement with those reported in the literature for these product types and their complexes.…”

Approach to Synthesis of β-Enamino Ketones and Pyrroles Catalyzed by Gallium(III) Triflate Under Solvent-Free Conditions

“…1 18.8, 28.8, 30.2, 39.6, 95.6, 163.2, 195.2. (3Z, 3 0 Z)-4,4 0 -(Propane-1,3-diylbis(azanediyl))dipent-3-en-2-one (3q) Yield: 94%; mp 61-62 C (lit. [17] not reported). IR (KBr), (n max =cm À1 ): 3272 (NH), 1622 (CO).…”