| 查看: 794 | 回复: 2 | |||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
[交流]
帮忙翻译几段英文（化工）
|
|||
|
A golden block-like crystal of 1 with dimensions 0.408mm0.192mm0.117mm was selected on a Bruker P4 diffractometer with graphite-monochromated Mo-Ka radiation (¼0.71073A ˚ ) at 292K using the –2 scan technique. The data were corrected for Lp and absorption effects. The crystal structure was solved using direct methods with the SHELXS-97 program [15]. Subsequent difference Fourier syntheses enabled all heavier atoms to be located. All hydrogen atoms were located from the successive difference Fourier syntheses. The non-hydrogen atoms were finally refined with anisotropic displacement parameters by full-matrix least-squares techniques [16]. The hydrogen atom positions were fixed geometrically at calculated distances and allowed to ride on the parent carbon atoms. The same manipulation for 2 was conducted as described above. Detailed information about the crystal data and structure determination for both compounds are summarized in table 1.Their selected interatomic distances and bond angles are given in table 2. CCDC NO.: 633035 (1), 633034 (2). 3. Results and discussion The IR spectra of both compounds display three strong absorptions at 1588(s), 1484(s), 1445(vs) cm1 for 1 and 1589(s), 1480(s), 1441(vs), cm1 for 2, due to the characteristic as (COO) and s (COO) stretching modes of carboxylate groups [17]. There are broad bands around 3438 cm1 observed in 1 and 2, suggesting water persists in both compounds. The one-dimensional structure of 1 was revealed by X-ray single-crystal structure analysis. Crystallographic data of 1 (as shown in table 1) indicates that [Mg(L) (4H2O)]n 1 belongs to a monoclinic system, space group P2(1)/c and Z¼4. Figure 1 presents the local coordination environment around magnesium as six-coordinate with two monodentate carboxylate groups of different olsalazine ligands and four water molecules. The coordination geometry can be best described as a distorted octahedron with a plane constructed by O(3A), O1W, O2W and O3W and apical sites occupied by O(4) and O4W with angle (O(4)–Mg(1)–O4W) 178.5. Each olsalazine in 1 is a double monodentate ligand linking two Mg atoms resulting in a 1 D zig–zag linear structure. All magnesium atoms stand in the vertex of the catenarian structure (as shown in figure 2). Totally different from 1, the crystal of [Ca(L) 4(H2O)] 2 belongs to a tetragonal crystal system, chiral space group P4(3)2(1)2 and Z¼8. The calciums in 2 adoptpentagonal bipyramid coordination mode with one monodentate carboxylate (O3A), one bidentate carboxylate (O5 and O6) of different olsalazine ligands and four water molecules (as shown in figure 3). Olsalazine in 1 was a bidentate bridge, but in 2 is a tridentate bridge linking two calcium atoms in a 1 D zig–zag linear structure (as shown in figure 4). |
回复此楼» 猜你喜欢
到新单位后，换了新的研究方向，没有团队，持续积累2区以上论文，能申请到面上吗
已经有6人回复
-
2025冷门绝学什么时候出结果
已经有7人回复
-
请问有评职称，把科研教学业绩算分排序的高校吗
已经有6人回复
-
Bioresource Technology期刊，第一次返修的时候被退回好几次了
已经有7人回复
-
真诚求助：手里的省社科项目结项要求主持人一篇中文核心，有什么渠道能发核心吗
已经有8人回复
-
寻求一种能扛住强氧化性腐蚀性的容器密封件
已经有5人回复
-
请问哪里可以有青B申请的本子可以借鉴一下。
已经有4人回复
-
请问下大家为什么这个铃木偶联几乎不反应呢
已经有5人回复
-
天津工业大学郑柳春团队欢迎化学化工、高分子化学或有机合成方向的博士生和硕士生加入
已经有4人回复
-
康复大学泰山学者周祺惠团队招收博士研究生
已经有6人回复
hyh4402031
金虫 (小有名气)
- 应助: 16 (小学生)
- 金币: 1107
- 散金: 675
- 红花: 5
- 帖子: 296
- 在线: 149.8小时
- 虫号: 713082
- 注册: 2009-03-02
- 性别: GG
- 专业: 光谱分析
denjiapin(金币+4):谢谢支持 2010-05-01 20:55
sirljz:禁止直接工具翻译的帖子 2010-05-01 23:01
sirljz:禁止直接工具翻译的帖子 2010-05-01 23:01
|
尺度（如果涉及到分形，这个可能要翻成维数）为 0.408mm0.192mm0.117mm 的1号金色棒状催化剂，使用Bruker P4 衍射仪运用石磨单频Mo-Ka幅射（frac14;0.71073A ˚ ）在292K使用–2 扫描技术进行扫描。得到的数据通过LP（应该是液相的意思，记不清了）和吸附作用较正。催化剂的结构使用SHELXS-97 方法（这个词也可能解释成程序，根据你的上下文判断，下同）直接解析。随后，不同的Fourier合成方法将重的原子固定。所有的氢原子也在不同的Fourier合成中成功的固定。最后所有的非氢原子通过全矩阵最小二乘技术的各向异性取代参数改良。氢原子的位置通过几何距离的计算来确定，使其能吸吸附在母体碳原子上。2号催化剂运用上面描述的方法进行同样的处理。两者详细的催化和结构表征的数据全部列在表1中。原子间隔和键角的选择列在表2中。CCDC NO.: 633035 (1), 633034 (2). 3，结果和计论 两种组分的红外光谱中，1号在 1588(s), 1484(s),1445(vs) cm1二号在 1589(s), 1480(s), 1441(vs), cm1有三个强的吸收峰，相对于 .as（COO) 和.s(COO)的羟酸根的伸缩振动。 在3438 cm-1上有一个宽的吸收峰，可能是在两种化合物中存在水的原故。 1的结构通过X光单晶衍射来表征。1的单晶衍生数据（表1）表明[Mg(L)(4H2O)]n是单晶结构，空间构型是P2(1)/c and Z¼4. 图1可以看出六价镁和两个olsalazine ligands的羟酸根相连（the local coordination environment 不会译）与四个水分子相连。 译不下去了，不是学这方向的，不好的地方望虫友指教 |
2楼2010-05-01 12:36:12