Structure and spectroscopic properties of ternary complexes of copper(II) N-tosylglcinates. Crystal and molecular structure of catena-mu-aqua)bis(N-tosylglycinato)bis(4-metylpyridine) copper(II). A case of linear-chain water bridged copper(II) polymer.

Two ternary complexes of copper(II)- N-tosylaglycine with pyridine and 4-Methylpyridine were prepared and characterized by means of magnetic, EPR, electronic, and IR spectra. Forone of them, catena-(mu-aqua)bis(N-tosylglycinato)bis(4-methylpyridine)copper(II). The structure was solved by the heavy-atom technique and refined by the full-matrix least-squares method to a final R index of 0.047 for 1965 unique reflections. The copper environment consists of two centrosymmetrically related carboxylic oxygens and two 4-methylpyridine nitrogens in a square-planararrangement. Two centrosymmetric water molecules, lying on the twofold axis, complete the coordination polyhedron totetragonal bipyramid and bridge the copper atoms, forming chains running along the [001] axis. The dependence of thed-d band maximum on the Cu-O(axia1) contact (2.755 (1) A). TheEPR parameters are also consistent with a CuN204 chromophore. The infrared spectra are discussed in comparison withthose of other structurally known copper(I1)-N-tosylglycinate complexes.