TY - JOUR
T1 - Low-temperature structures of CuO and AgO and their relationships to those of MgO and PdO
AU - Brese, N. E.
AU - O'Keeffe, M.
AU - Ramakrishna, B. L.
AU - Von Dreele, R. B.
N1 - Funding Information:
This material is based upon work supported under a National Science Foundation Graduate Fellowship to N.E.B. and is part of a continuing program in crystal chemistry supported by the National Science Foundation (DMR 8813524). We have benefited from the use of facilities at the Manuel Lujan, Jr. Neutron Scattering Center, a national user facility, funded as such, by the DOE/Office of Basic Energy Sciences. The use of the magnetic measurement facility of the chemistry department at Arizona State University is gratefully acknowledged.
PY - 1990/11
Y1 - 1990/11
N2 - The CuO structure has been refined from time-of-flight neutron diffraction data collected at 11 K. Crystal data: C2 c, a = 4.6833(2) Å, b = 3.4208(1) Å, c = 5.1294(2) Å, β = 99.567(1)°, V = 81.031(7)Å3. The CuO distances are 1.951(1) and 1.961(1) Å (each 2 ×) with corresponding OCuO angles of 84.315(7)° and 95.685(7)°. Data for a mixture of AgO and Ag2SO4 were collected at 9 K. Crystal data for AgO: P21 c, a = 5.8517(3) Å, b = 3.4674(2) Å, c = 5.4838(3) Å, β = 107.663(3)°, V = 106.02(1)Å3. The formula for AgO is better written as Ag(I)Ag(III)O2. The Ag(III) atoms are 4-coordinated: AgO = 2.008(3) (2x) and 2.036(3) (2x), and the Ag(I) atoms are 2-coordinated by O: AgO = 2.147(3) (2x). A comparison of the CuO, AgO, PdO, and MgO structures is presented.
AB - The CuO structure has been refined from time-of-flight neutron diffraction data collected at 11 K. Crystal data: C2 c, a = 4.6833(2) Å, b = 3.4208(1) Å, c = 5.1294(2) Å, β = 99.567(1)°, V = 81.031(7)Å3. The CuO distances are 1.951(1) and 1.961(1) Å (each 2 ×) with corresponding OCuO angles of 84.315(7)° and 95.685(7)°. Data for a mixture of AgO and Ag2SO4 were collected at 9 K. Crystal data for AgO: P21 c, a = 5.8517(3) Å, b = 3.4674(2) Å, c = 5.4838(3) Å, β = 107.663(3)°, V = 106.02(1)Å3. The formula for AgO is better written as Ag(I)Ag(III)O2. The Ag(III) atoms are 4-coordinated: AgO = 2.008(3) (2x) and 2.036(3) (2x), and the Ag(I) atoms are 2-coordinated by O: AgO = 2.147(3) (2x). A comparison of the CuO, AgO, PdO, and MgO structures is presented.
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U2 - 10.1016/0022-4596(90)90310-T
DO - 10.1016/0022-4596(90)90310-T
M3 - Article
AN - SCOPUS:0002449690
VL - 89
SP - 184
EP - 190
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
IS - 1
ER -