CHARACTERIZING AN UNUSUAL GIANT CLUSTER ANION WITH 276 ATOMS BY INVESTIGATION OF THE INFLUENCE OF DIFFERENT CATION LATTICES SYNTHESIS AND CRYSTAL-STRUCTURE OF (NH4)15[MO57FE6(NO)6O174(OH)3(H2O)24]CENTER-DOT-73H2O

Abstract

Müller A, Bögge H, Krickemeyer E, Dillinger S. CHARACTERIZING AN UNUSUAL GIANT CLUSTER ANION WITH 276 ATOMS BY INVESTIGATION OF THE INFLUENCE OF DIFFERENT CATION LATTICES SYNTHESIS AND CRYSTAL-STRUCTURE OF (NH4)15[MO57FE6(NO)6O174(OH)3(H2O)24]CENTER-DOT-73H2O. BULLETIN OF THE POLISH ACADEMY OF SCIENCES-CHEMISTRY. 1994;42(3):291-298.The compound (NH4)15[Mo57Fe6(NO)6O174(OH)3(H2O)24].73H2O (1) containing a giant cluster anion (molecular mass: 9251.0 g mol-1) has been synthesized and characterized by a single-crystal X-ray investigation. Compound 1 crystallizes in the space group P6(3)/mmc with the unit cell dimensions a = 23.730(7) angstrom, c = 27.312(10) angstrom, V = 13319(7) angstrom 3 (R = 0.104 for 2433 independent reflections). The results obtained here for a new cation lattice, give useful information for the knowledge of the giant cluster anion containing 276 non-hydrogen atoms, because its electron distribution in the HOMO region seems to be influenced by the cation lattice. Only little is known up to now about electronic structures of giant transition metal clusters