Acta Phys. -Chim. Sin. ›› 1987, Vol. 3 ›› Issue (05): 491-500.doi: 10.3866/PKU.WHXB19870510
• ARTICLE •
Huang Chunhui; Xu Rongfang; Zhou Yongfeng; Xu Guangxian; Guo Fang; Zhu Naijue
The Synthesis, character and crystal structure of La(NO_3)_3·3Ph_3PO·C_2H_5OH· CHCl_3 has been presented in this paper. Crystal and molecular structure has been determined by single-crystal X-ray diffraction techniques with a four circle diffrac- tometer. The crystal is monoclinic with space group P2_1/n. The unit cell parameters are:
a=1.3111(5) nm Z=4
b=2.5075(10) nm F(000)=2687.65
c=1.8725(6) nm μ(MoKa)=9.83 cm~(-1)
β=98.53(3)° d_(cal.)=1.45 gcm~(-3)
V=6.088 nm d_(lab.)=1.43 gcm~(-3)
8022 independent diffaraction data has been collected, of which 3362 observable independent reflections were used for structure refinement to a final R value of 0.08. The lanthanum atom is coordinated by nine oxygen atoms, of which six from three bidentate nitrate groups and the others from from three Ph_3PO each. The average bond length of La—O is 0.2549 nm.
Huang Chunhui, Xu Rongfang, Zhou Yongfeng, Xu Guangxian, Guo Fang, Zhu Naijue. STUDIES ON NEUTRAL PHOSPHINE EXTRACTED COMPLEXES OF RARE EARTHS Ⅲ. SYNTHESIS AND CRYSTAL STRUCTURE OF TRINITRATOTRI (TRIPHENYL-PHOSPHINE OXIDE) LANTHANUM[J].Acta Phys. -Chim. Sin., 1987, 3(05): 491-500.
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