TY - JOUR
T1 - New extended clusters in ternary molybdenum oxides
AU - McCarley, R. E.
AU - Lii, K. H.
AU - Edwards, P. A.
AU - Brough, L. F.
N1 - Funding Information:
* Presented at the Symposium on Metal-Metal Bonding in Solid State Clusters and Extended Arrays, held during the American Chemical Society meeting, St. Louis, Missouri, April 9-10, 1984. t This work was supported by the U.S. Department of Energy through the Ames Laboratory, which is operated by Iowa State University under Contract W-7405-Eng-82. This research was supported by the Assistant Secretary for Energy Research, Office of Basic Energy Sciences.
PY - 1985/3/15
Y1 - 1985/3/15
N2 - Three new compounds representative of different structure types in the family of ternary metal oxides with extended metal-metal bonded arrays are discussed. InMo4O6 (isomorphous with NaMo4O6) contains infinite anion chains of condensed octahedral cluster units, (Mo4O6-)∞, crosslinked to form channels where In+ cations reside in sites of square pyramidal coordination to oxygen. The linear array of In atoms in the channels, with d(In-In)=2.8628(4) Å, suggests some degree of In-In bonding, and these interactions may contribute to the metallic conductivity determined for this compound over the range 2-300 K. Infinite chains with Mo2O4 repeat units condensed as rhomboidal clusters fused on opposite edges are the outstanding structural feature of NaMo2O4. The compound also has a doublelayer lattice MoO2 with Na+ ions fractionally occupying octahedral coordination sites between alternate layers. The compound Ca5.45Mo18O32 contains three different kinds of cluster chains with Mo1, Mo2, and Mo4 repeat units. Metal cluster electron counts on the three different repeat units, estimated from Mo-O bond strength-bond distance relations, are reflected in the formula Ca5.45(MoO32.26-)2(Mo2 O3.50.22-)4(Mo4O62.65-)2.
AB - Three new compounds representative of different structure types in the family of ternary metal oxides with extended metal-metal bonded arrays are discussed. InMo4O6 (isomorphous with NaMo4O6) contains infinite anion chains of condensed octahedral cluster units, (Mo4O6-)∞, crosslinked to form channels where In+ cations reside in sites of square pyramidal coordination to oxygen. The linear array of In atoms in the channels, with d(In-In)=2.8628(4) Å, suggests some degree of In-In bonding, and these interactions may contribute to the metallic conductivity determined for this compound over the range 2-300 K. Infinite chains with Mo2O4 repeat units condensed as rhomboidal clusters fused on opposite edges are the outstanding structural feature of NaMo2O4. The compound also has a doublelayer lattice MoO2 with Na+ ions fractionally occupying octahedral coordination sites between alternate layers. The compound Ca5.45Mo18O32 contains three different kinds of cluster chains with Mo1, Mo2, and Mo4 repeat units. Metal cluster electron counts on the three different repeat units, estimated from Mo-O bond strength-bond distance relations, are reflected in the formula Ca5.45(MoO32.26-)2(Mo2 O3.50.22-)4(Mo4O62.65-)2.
UR - http://www.scopus.com/inward/record.url?scp=0021393388&partnerID=8YFLogxK
U2 - 10.1016/S0022-4596(85)80056-6
DO - 10.1016/S0022-4596(85)80056-6
M3 - 期刊論文
AN - SCOPUS:0021393388
SN - 0022-4596
VL - 57
SP - 17
EP - 24
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
IS - 1
ER -