BINUCLEAR METAL-COMPLEXES .26. SYNTHESIS AND MAGNETIC AND SPECTRAL PROPERTIES OF BINUCLEAR COPPER(II) COMPLEXES WITH N-(2-ALKYLTHIOETHYL)-3-AMINOPROPANOL .1.

Binuclear copper(II) complexes with N-(2-alkylthioethyl)-3-aminopropanol [Cu(RS(CH2)2NH(CH2)O)]ClO4 and Cu(RS(CH2)2NH(CH2)3O)CuBr2 (where R = CH3, C2H5, n-C3H7, n-C3H7, n-C4H9, t-C4H9), were prepared and characterized by elemental analyses, infrared and electronic spectra, and magnetic susceptibilities (78-300 K). Similar to binuclear complexes with the NNO tridentate ligands (R2(CH2)mNH(CH2)nOH = R-nnoH), [Cu(R-nno)]X (X = ClO4 or B(C6H5)4), all these complexes show subnormal magnetic moments at room temperature and exhibit a band in the near-ultraviolet region (∼24 × 103 cm-1) characteristic of oxobridged structures. In the case of the perchlorates, the cryomagnetic data can be interpreted by the equation based on a binuclear structure, and the antiferromagnetic interaction is generally stronger than that of the [Cu(R-nno)]X complexes. However, the temperature dependences of magnetic susceptibilities of the Cu(R-sno)CuBr2 complexes are unusual and could not be explained by any conventional theoretical formulas. © 1979.