POLYOL METAL-COMPLEXES .3. LITHIUM BIS(OXOLANEDIOLATO)CUPRATE TETRAHYDRATE AND LITHIUM MU-PROPANETRIOLATOCUPRATE HEXAHYDRATE - 2 HOMOLEPTIC COPPER(II) COMPLEXES WITH POLYOLATE LIGANDS DERIVED FROM THE MULTIPLY DEPROTONATED POLYOLS ANHYDRO-ERYTHRITOL AND GLYCEROL

In the blue-violet crystals of lithium bis{meso-oxolane-3,4-diolato(2-)}cuprate tetrahydrate, Li2[Cu(C4H6O3)2] . 4H2O (1) (P2(1)/c, a = 706.2(4), b = 1114.0(6), c = 95 8.3(5) pm, beta = 107.67(3)-degrees, Z = 2, R(W) = 0.022), square-planar coordinated copper(II) ions are bound to twofold deprotonated anhydro-erythrol ligands (Cu-O 194.36(17) and 191.83(17) pm). The oxygen ligator atoms of the mononuclear cuprate ions are bound to lithium ions or they are acceptors in asymmetrical hydrogen bonds. Trinuclear tris-{mu-propanetriolato(3-)}tricuprate ions with triply deprotonated glycerol as ligands are present in the deep blue columns of LiCuC3H5O3.6H2O (2) (P3BARc1, a = 1278.8(6), c = 2 420.5(12) pm, Z = 12, R(W) = 0.059), which has been prepared for the first time by Bullnheimer [2]. The copper(II) ions in 2 are also bound to alkoxide oxygen atoms in square-planar coordination (Cu-O 190.7(7) and 192.4(8), Cu-mu-O 196.6(6) and 195.0(7) pm). The hydrogen bond system and the content of channels parallel [001] are described in terms of a disorder model.