Indexed by:
Abstract:
Two oxoborates, (Pb3O)(2)(BO3)(2)MO4 (M = CF, MO), have been prepared by solid-state reactions below 700 degrees C. Single-crystal XRD analyses showed that the CF Compound crystallizes in the orthorhombic group Pnma with a = 6.4160(13) angstrom, b = 11.635(2) angstrom, c = 18.164(4) angstrom, Z = 4 and the Mo analog in the group Cmcm with a = 18.446(4) angstrom, b = 6.3557(13) angstrom, c = 11.657(2) angstrom, Z = 4. Both compounds are characterized by one-dimensional (1)(infinity)[Pb3O](4+) chains formed by corner-sharing OPb4 tetrahedra. BO3 and CrO4 (MoO4) groups are located around the chains to hold them together via Pb-O bonds. The IR spectra further confirmed the presence of BO3 groups in both structures and UV-vis diffuse reflectance spectra showed band gaps of about 1.8 and 2.9 eV for the CF and MID Compounds, respectively. Band structure calculations indicated that (Pb3O)(2)(BO3)(2)MoO4 is a direct semiconductor with the calculated energy gap of about 2.4 eV. (C) 2009 Elsevier Inc. All Fights reserved.
Keyword:
Reprint Author's Address:
Email:
Source :
JOURNAL OF SOLID STATE CHEMISTRY
ISSN: 0022-4596
Year: 2009
Issue: 11
Volume: 182
Page: 3091-3097
3 . 3 0 0
JCR@2022
ESI Discipline: CHEMISTRY;
JCR Journal Grade:2
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 15
SCOPUS Cited Count: 13
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1