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Mixed crystals [Cu 0.5 Co 0.5 (H 2 Tea)(SCN)] (1), [Cu 0.5 Co 0.5 (H 2 Tea)Cl] (2) (H 3 Tea = triethanolamine) have been obtained by the open-air reaction of metallic copper with cobalt(II) chloride/cobalt(II) thiocyanate and triethanolamine in non-aqueous solvents, like dmf, dmso, CH 3 OH and CH 3 CN. The simultaneous presence of copper and cobalt in the mixed crystals was unambiguously determined by atomic absorption, EPR and electronic spectroscopy. Details of 1 have been studied structurally, and a preliminary report of the structure of 2 is also given. The mononuclear species 1 and 2 contain crystallographically indistinguishable Cu(II) and Co(II) ions in virtually identical trigonal bipyramidal sites. The molecules are linked together by O-H···O hydrogen bonds to give chains. The values of the temperature independent μ eff  of 3.50 and 3.48 μ B  for 1 and 2 (in the range of T = 20 - 280 K), respectively, agree with the 1:1 molar ratio of the metals in both samples.

zeitschrift für naturforschung b

Spectroscopic and Magnetostructural Evidence for the Formation of [Cu 0.5 Co 0.5 (H 2 Tea)X] Mixed-Crystal Compounds from Zerovalent Cu and Co Salts in the Presence of Triethanolamine (H 3 Tea -Triethanolamine; X = SCN, Cl)