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Synthesis and crystal structure of sodium praseodymium polyphosphate, NaPr(PO_3)_4 被引量:1
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作者 K.Horchani-Naifer j.amami M.Férid 《Journal of Rare Earths》 SCIE EI CAS CSCD 2009年第1期1-3,共3页
Reaction of Na2CO3, Pr6O11 and H3PO4 gave the sodium praseodymium polyphosphate NaPr(PO3)4.The title compound crystallized in the monoclinic P21/n space group with a=0.9965(4) nm, b=1.31437(4) nm, c=0.72271(3)... Reaction of Na2CO3, Pr6O11 and H3PO4 gave the sodium praseodymium polyphosphate NaPr(PO3)4.The title compound crystallized in the monoclinic P21/n space group with a=0.9965(4) nm, b=1.31437(4) nm, c=0.72271(3) nm, β=90.429(3)°, V=0.9465(4) nm3, Z=4, R=0.0493 and wR=0.1266 for 1855 independent reflections.The structure of NaPr(PO3)4 consisted of PrO8 polyhedra sharing oxygen atoms with phosphoric group PO4 to form a three-dimensional framework, delimiting intersecting tunnels in which the sodium ion was located.Each Na+ ion was bonded to seven oxygen atoms. 展开更多
关键词 POLYPHOSPHATE PRASEODYMIUM crystal structure infrared spectroscopy rare earths
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