Burk, Johst H.; Whitwell II, George E.; Lemley, John T., Inorganic Chemistry, 1983, vol. 22, # 9, p. 1306 - 1314
作者:Burk, Johst H.、Whitwell II, George E.、Lemley, John T.、Burlitch, James M.
DOI:——
日期:——
Skrylev, L. D.; Nilova, O. V.; Menchuk, V. V., Journal of applied chemistry of the USSR, 1991, vol. 64, p. 937 - 941
作者:Skrylev, L. D.、Nilova, O. V.、Menchuk, V. V.
DOI:——
日期:——
<sup>31</sup>P NMR studies of the linear chain magnets: Poly(metal phosphinates)
作者:L. S. Smith、P. R. Newman、A. J. Heeger、A. F. Garito、H. D. Gillman、Piero Nannelli
DOI:10.1063/1.433915
日期:1977.6.15
The paramagnetic shift and linewidth of the 31P NMR have been measured for three isoelectronic magnetic polymers Co[OP (C4H9)2O]2, Cr[OP (CH3)2(C6H5)2O]OH, and Cr[OP (CH3)(C6H5)O] [OP (C8H17)2O] for 77⩽T⩽300 K. Analysis of the paramagnetic shift as a function of the static magnetic susceptibility yields a value for the hyperfine coupling constant A≈4×10−4 cm−1. Previously measured and calculated hyperfine constants for an electron in the 3s and 3p orbitals are used to show the paramagnetic shift is due mainly to transferred magnetic spin density (≈0.1%) in the phosphorus 3s orbital. The linewidths of these materials are approximately 10 Oe at room temperature and broaden slightly with decreasing temperature. The temperature dependences of the linewidths are used to deduce an upper limit (⩽1%) for the amount of transferred spin density in the phosphorus 3p orbital.