MAGNETIC EXCHANGE IN CIS-BIS(GLYCINATO)AQUOCOPPER(II), BIS-(HYDROGEN-ORTHO-PHTHALATO)DIAQUOCOPPER(II), (ORTHO-PHTHALATO)AQUOCOPPER(II) AND CORRESPONDING DEHYDRATED COMPLEXES - POSSIBLE CORRELATION BETWEEN COPPER(II)-WATER BOND LENGTHS AND ABILITY OF HYDRATED COPPER(II) CARBOXYLATES TO FORM MAGNETICALLY SUBNORMAL ANHYDROUS COMPLEXESD