. . . . "The structure of these compounds is thought to be a ???lantern??? shape: [0085] This is the structure that is believed to apply to metal carboxylates of the general formula: M2[O2CR]4X2 wherein M???Cu(II), Rh(II), Mo(II), Ru(II), and Cr(III); X???Cl, Br, H2O; and R is an organic group." .