Presence or absence of a central Se atom in silver selenide/selenolate clusters with halite topology: syntheses and properties of [(Ph(3)PAg)(8)Ag(6)(mu(6)-Se)(1-x/2)(SePh)(12)](x+) (x = 0, 1).
Two types of Ph(3)P/Ph ligated Ag(14)Se(13-x) (x = 0, 0.5) clusters with halite topology were synthesized that differ by the occupation/nonoccupation of the central position by a 13th Se atom and the resulting charge: neutral [(Ph(3)PAg)(8)Ag(6)(mu(6)-Se)(SePh)(12)].11THF (1) and ionic [(Ph(3)PAg)(8)Ag(6)(mu(6)-Se)(0.5)(SePh)(12)][R(3)SnCl(2)].nTHF (R = Ph, n = 6 (2a); Cy, n = 5 (2b)) are all based on a tetradecanuclear cluster. The structural response on the charge was rationalized by DFT calculations, and the optical absorption behavior was studied.
Nayek
Hari Pada
HP
Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35043 Marburg, Germany.
Massa
Werner
W
Dehnen
Stefanie
S