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LifePursuit
木虫之王 (文学泰斗)
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篮球少年: 金币+140, 翻译EPI+1, ★★★★★最佳答案, 太感谢你了 谢谢了 2014-11-25 22:30:11
phu_grassman: 金币+5, good job. 2014-11-26 08:57:59
篮球少年: 金币+140, 翻译EPI+1, ★★★★★最佳答案, 太感谢你了 谢谢了 2014-11-25 22:30:11
phu_grassman: 金币+5, good job. 2014-11-26 08:57:59
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Abstract: A novel lead complex, [pb(MeOH)2L2]n, is obtained through solvent synthesis from Pb(NO3)2, 2-bromo-4-methylbenzoic acid and Na2CO3 in a mixed solvent of methanol and water (2:1, v/v). (“存在下反应”,在什么的存在下反应?这个摘要的汉语很多地方都不明不白的) The X-ray crystallographic analysis shows that this lead complex belongs to the monoclinic system with space group P 21/n (a = 26.592(8)Å, b = 9.7351(19)Å, c = 8.2808(17)Å, α = 90°, β = 90.94(3)°, γ = 90°, V = 2143.4(9)Å3, Z = 1, Mr = 485.96, Dc = 2.167g cm-3, F(000) = 1312). Note that 1375 out of 1891 independent diffraction points satisfy Fo2 ≥ 2(Fo2). The final residual factors, R1 and wR2, are 0.0601 and 0.1298, respectively. In each structural unit, one Pb(II) ion is connected to two 2-bromo-4-methylbenzoic ions and two methanol molecules according to a coordination number of 8. Two adjacent lead atoms are bridged in the form of Pb—O—Pb coordination bond by the other oxygen atom of 2-bromo-4-methylbenzoic ion; The distance between the two adjacent lead atoms is 4.303Å, and the Pb—O—Pb bond angle is 107.6°. Such a structural arrangement leads to the infinite extension of the whole system along the c-axis to form a 1-dimensional chain-like morphology. 大致如此,供你参考。 |
2楼2014-11-25 21:39:20













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