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- W2332277133 abstract "Six dinuclear copper(II) complexes have been prepared, Cu 2 (taet)(plam) 2 X 2 where taet = 1,1,2,2-tetraacetylethanediide, plam = N-alkylated polyamine such as tmen = N,N,N′,N′-tetramethylethylenediamine or pmdt = N,N,N′,N′,N′-pentamethyldiethylenetriamine, X = a monovalent anion such as ClO 4 - , NO 3 - or Cl - . These complexes are classified into two categories from the results of electronic spectra, IR spectra, and X-ray single crystal structure analysis as follows: (1) 4-coordinate-4-coordinate dinuclear, [Cu 2 (taet)(tmen) 2 ]X 2 (where X = ClO 4 - or NO 3 - ), (2) 5-coordinate-5-coordinate dinuclear, [Cu 2 (taet)(tmen) 2 Cl 2 ], and [Cu 2 (taet)(pmdt) 2 ]X 2 (where X = ClO 4 - , NO 3 - , or Cl - ). The crystal structure of Cu 2 (taet)(tmen) 2 (ClO 4 ) 2 · H 2 O (1) has been determined by the single crystal X-ray diffraction technique; monoclinic space group P2 1 /a with a = 26.478(3), b = 8.744(1), c = 15.601(3) Å, β = 106.195(9)°, and V = 3468.9(8) Å 3 for Z = 4. The final agreement factors are R = 0.097 ( R w = 0.099). The geometry of each Cu(II) moiety in the dinuclear cation (1) is 4-coordinate square planar with a N 2 O 2 donor set. This tmen-dinuclear complex exhibits a very weak C u (II)-Cu (II) interaction (J = -0.5 cm -1 ), and shows characteristic ESR spectra with seven hyperfine peaks in 1,2-dichloroethane solution at room temperature. This is not found for the corresponding pmdt-dinuclear complex. All complexes obtained in this study are very soluble in many organic solvents. The tmen-dinuclear complexes show pronounced solvatochromic behavior-dependent on the solvent donor properties. This is not found for the corresponding pmdt-dinuclears, which are stable as 5-coordinated species." @default.
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- W2332277133 date "1995-04-01" @default.
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- W2332277133 title "4- and 5-Coordinate Dinuclear Copper(II) Complexes with the Tetraacetylethanediide and an N-Alkylated Diamine or a Triamine" @default.
- W2332277133 doi "https://doi.org/10.1515/znb-1995-0411" @default.
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