Patent number: 6022986
Abstract: The invention is directed to manganese-containing polyoxometallates of the formula (1)(Q).sub.q (Mn.sub.p A.sub.a X.sub.x Y.sub.y M.sub.m O.sub.d Z.sub.z (H.sub.2 O).sub.b)cH.sub.2 O (1)where Q is one or more cations selected from the group consisting of H, Li, K, Na, Rb, Cs, Ca, Mg, Sr, Ba, Al, PR.sup.1 R.sup.2 R.sup.3 R.sup.4 and NR.sup.1 R.sup.2 R.sup.3 R.sup.4 where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 =H or C.sub.1 -C.sub.20 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl or aryl;Mn is manganese;A is a heterometal and is one or more transition metals from transition groups II to VIII apart from Zn, in particular Ru, V, Ti, Zr, Cr, Fe, Co, Cu, Sn, Ni, Re or Os;X is one or more elements selected from the group consisting of Ga, B, P, Si, Ge, As, F, Cl, Br and I;Y is Sb, S, Te, Se and Bi;M is one or more transition metals selected from the group consisting of Mo, W, Nb, Ta and V;Z is one or more anions selected from the group consisting of OH.sup.-, F.sup.-, Cl.sup.-, Br.sup.-, I.sup.-, N.sub.3.sup.-, NO.sub.3.sup.
Type:
Grant
Filed:
April 23, 1998
Date of Patent:
February 8, 2000
Assignee:
Hoechst Research & Technology Deutschland GmbH & Co. KG
Inventors:
Bernd Scharbert, Rolf Peter Schulz, Bernt Krebs, Rainer Bohner, Christian Thulig