| THE FORMATION AND CRYSTAL STRUCTURE OF (η~5-C_5H_5)_3Nd·OC_4H_8 AND (η~5-C_5H_5)_3Pr·OC_4H_8 |
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| 引用本文： | 樊玉国,吕品喆,金钟声,陈文启.THE FORMATION AND CRYSTAL STRUCTURE OF (η~5-C_5H_5)_3Nd·OC_4H_8 AND (η~5-C_5H_5)_3Pr·OC_4H_8[J].中国科学B辑(英文版),1984(10). |
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| 作者姓名： | 樊玉国 吕品喆 金钟声 陈文启 |
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| 作者单位： | Jilin University，Changchun，Jilin University，Changchun，Institute of Applied Chemistry，Academia Sinica，Institute of Applied Chemistry，Academia Sinica |
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| 摘 要： | Under suitable reactant ratios without sublimation or reerystallization, single crystals of(η~5-C_5,H_5)_3 Ln-OC_4H_8(In = La, Pr, Nd) could be prepared by the reaction of cyclopentadienylsodium with respective lanthanide trichlorides in THF. Using low temperature technique wehave collected the X-ray data of single crystals of the title compounds at -60℃ under N_2and determined crystal structures. (η~5-C_5H_5)_3 Pr·OC_4H_8, (η_5-C_5H_5)_3 Nd·OC_4H_8] recrystallizesin the monoclinic space group P2_1/nP2_1/n] with unit cell parameters a = 8.406(3) 8.364(3)],b = 24. 510(9) 24.467(9)], c = 8. 284(3) 8.254(3)] A, β= 101.60(3) 101.42 (3)], D_c = 1. 62 1.65]gem~(-3) for z = 4 4]. Least-square refinement has led to a final R value of 0.056 0.063],R_W = 0.049 0.062]. The THF molecule is coordinated to the Pr Nd] atom at a Pr-O Nd-O]bond length of 2.16(1) 2.54(1)], A. The Pr-C (Cp) Nd-C(Cp)] bond distances average 2.80(2) 2.78(2)] A. The title compounds are isostructaral with (η~5-C_5H_5)_3
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