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Red_Andy

木虫 (小有名气)

[求助] 一句话翻译

As we all know, formic acid has two conformers: transformic acid and cis-formic acid, namely, (T)-formic acid and (C)-formic acid; both conformers are planer. (T)-Formic acid has the acidic hydrogen aligned toward the oxygen atom of the carbonyl group, while (C)-formic acid has the hydrogen atom away from it. And (T)-formic acid is more stable than (C)-formic acid by about 4.0 kcal/mol. Our calculation of this value is in excellent agreement with this experimental number with an energy difference between the two conformations of 4.0 kcal/mol at the B3LYP/6-311++g(2d,2p)//B3LYP/6-311++g(d,p) level of theory. This corresponds to a Boltzman population ratio of about 1000 to 1 in favor of the trans conformer at room temperature.

求这里最后一句话的翻译This corresponds to a Boltzman population ratio of about 1000 to 1 in favor of the trans conformer at room temperature.。

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xzx8066

木虫 (正式写手)

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corresponds to:与……相符;
population:布局数,Boltzman分布中一个参数,https://baike.baidu.com/view/6053980.htm
in favor of:支持
This:指上面几句话描述的理论和实验结果,即蚁酸有两种构象,即trans conformer(T)和cis conformer(C),而且T构象比C构象稳定。
实际存在的现象:常温下(室温下),蚁酸以T构象形式存在的数量是C构象的1000倍,即比值为1000:1。

所以这句话的意义就是:上述理论与实验结果与存在的现象[常温下(室温下),蚁酸以T构象形式存在的数量是C构象的1000倍,即比值为1000:1]是相符合的。
2楼2013-04-01 08:45:32
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hookhans

铁杆木虫 (著名写手)

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Red_Andy: 金币+15, 翻译EPI+1, ★★★★★最佳答案 2013-04-01 11:58:30
This corresponds to a Boltzman population ratio of about 1000 to 1 in favor of the trans conformer at room temperature。

这相当于以1000/1的玻尔兹曼分布比例,说明在室温下主要是反式的构象。
where-there-is-a-will-there-is-a-way.
3楼2013-04-01 09:07:45
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bwshanxi

至尊木虫 (文坛精英)

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总所周知,甲酸有两种构象: 顺势式构象的酸和反式构象的酸,即:(T)-甲酸和(C)-甲酸。两种构象都是在一个平面内。(T)型-甲酸的酸性氢与羰基的氧原子的取向一致;(C)型-甲酸的酸性氢与羰基的氧原子不一致。(C)型-甲酸与(T)型-甲酸相比,(T)型-甲酸更稳定,其稳定能量大约是4.0千卡/摩尔。我们的计算值与B3LYP/6-311++g(2d,2p)//B3LYP/6-311++g(d,p)的理论水平的(C)型-甲酸与(T)型-甲酸能量差非常接近。这对应于失望条件下吗,玻尔兹曼比率的千分之一的构象转变。
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4楼2013-04-01 09:34:57
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hookhans

铁杆木虫 (著名写手)

Farmer

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赫赫, 这么多的专家顾问都来了。
where-there-is-a-will-there-is-a-way.
5楼2013-04-01 11:13:04
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