The magnetic and magnetocaloric properties for the Nd12Co6Pb compound were investigated. The Curie temperature Tc of the magnetic transition of Nd12Co6Pb compound is 194 K. The experimentally determined magnetic effec...The magnetic and magnetocaloric properties for the Nd12Co6Pb compound were investigated. The Curie temperature Tc of the magnetic transition of Nd12Co6Pb compound is 194 K. The experimentally determined magnetic effective paramagnetic moment isμeff= 12.36μB per formula unit (3.49μb per Nd atom). The maximum magnetic entropy change in the low magnetic field changes of 0 ~ 2 T for the Nd12Co6Pb compound is about 215.0 J·mole-1·K-1.展开更多
Co_6 (μ_3-Se)_8 (PEt_3)_6·THF, MW=1766.4, space group R, has the trigonal parameters, a=11.890(2)°, α=92.72(2)°, V=1670.4~3, Z=1. Mo Kα radiation, λ=0.71073, Dc=1.749 g/cm^3, μ= 59.18 cm^(-3), F(00...Co_6 (μ_3-Se)_8 (PEt_3)_6·THF, MW=1766.4, space group R, has the trigonal parameters, a=11.890(2)°, α=92.72(2)°, V=1670.4~3, Z=1. Mo Kα radiation, λ=0.71073, Dc=1.749 g/cm^3, μ= 59.18 cm^(-3), F(000)=870, R=0.058 and Rw=0.067 for 1529 observed unique reflections with I>3σ(I). The molecular structure consists of an idealized octahedral Co_6-core. The Co-Co distances fall in the range of 2.909-2.9122.展开更多
Co_6(μ_3-S)_8(Ph_2PCH_2P(O)Ph_2)_6, MW=3012.5, space group R, has the hexagonal parameters, a=26.764(10), c=16.979 (10), V=10532.8~3, Z=3. Mo Kα radiation, λ= 0.71069, Dc=1.425 g/cm^3, μ=9.94 cm^(-3), F(000)=4650,...Co_6(μ_3-S)_8(Ph_2PCH_2P(O)Ph_2)_6, MW=3012.5, space group R, has the hexagonal parameters, a=26.764(10), c=16.979 (10), V=10532.8~3, Z=3. Mo Kα radiation, λ= 0.71069, Dc=1.425 g/cm^3, μ=9.94 cm^(-3), F(000)=4650, R=0.073 and Rw=0.077 for 1965 observed unique reflections with I>3σ(I). The molecular structure consists of a distorted octahed- ral Co_6-core. The Co-Co and Co-S distances fall in the range of 2.805-2.838 and 2.213-2.253, respectively.展开更多
基金Project supported by the Guangxi Natural Science Foundation (0575001)
文摘The magnetic and magnetocaloric properties for the Nd12Co6Pb compound were investigated. The Curie temperature Tc of the magnetic transition of Nd12Co6Pb compound is 194 K. The experimentally determined magnetic effective paramagnetic moment isμeff= 12.36μB per formula unit (3.49μb per Nd atom). The maximum magnetic entropy change in the low magnetic field changes of 0 ~ 2 T for the Nd12Co6Pb compound is about 215.0 J·mole-1·K-1.
基金This work was supported by the National Natural Science Foundation of China.
文摘Co_6 (μ_3-Se)_8 (PEt_3)_6·THF, MW=1766.4, space group R, has the trigonal parameters, a=11.890(2)°, α=92.72(2)°, V=1670.4~3, Z=1. Mo Kα radiation, λ=0.71073, Dc=1.749 g/cm^3, μ= 59.18 cm^(-3), F(000)=870, R=0.058 and Rw=0.067 for 1529 observed unique reflections with I>3σ(I). The molecular structure consists of an idealized octahedral Co_6-core. The Co-Co distances fall in the range of 2.909-2.9122.
基金Project supported by the National Natural Science Foundation of China.
文摘Co_6(μ_3-S)_8(Ph_2PCH_2P(O)Ph_2)_6, MW=3012.5, space group R, has the hexagonal parameters, a=26.764(10), c=16.979 (10), V=10532.8~3, Z=3. Mo Kα radiation, λ= 0.71069, Dc=1.425 g/cm^3, μ=9.94 cm^(-3), F(000)=4650, R=0.073 and Rw=0.077 for 1965 observed unique reflections with I>3σ(I). The molecular structure consists of a distorted octahed- ral Co_6-core. The Co-Co and Co-S distances fall in the range of 2.805-2.838 and 2.213-2.253, respectively.
