| 二氯合铜(Ⅰ)酸四(三苯基氧膦)二氯合希土(Ⅲ)配合物的合成和红外光谱研究 |
| SYNTHESIS AND INFRARED STUDIES OF TETRAKIS(TRIPHENYLPHOSPHINE OXIDE)DICHLOROCUPROSDICHLOROLANTHANIDES |
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| 摘要: 合成了通式为[(Ph3P=O)4LnCl2][CuCl2](Ln=La、Ce、Pr、Nd、Sm、Eu、Gd、Tb、Dy、He、Er、Y)的新配合物共12个,测定了它们的红外光谱(100～4600m-1)和部分配合物的31P NMR.比较了[(Ph3P=O)4LnCl3]、[(Ph3P=O)4LnCl2]+和[(Ph3P=O)5LnCl]2+的P=O伸缩振动频率.结果表明希土配合物的正电荷越高,P=O基对希土离子配合能力越强,P=O伸缩振动频率更多地移向低波数,νP=O的顺序为:[(Ph3P=O)4LnCl3]>[(Ph3P=O)4LnCl2]+≥[(Ph3P=O)5LnCl]2+.讨论了希土配位键的共价性。 |
| 关键词: 希土 铜(Ⅰ)配合物 合成 红外光谱 三苯基氧化膦 |
| 基金项目: |
| Abstract: A series of new complexes with the general formula of [(Ph3P = O4)LnCl]2[CuCl2] (Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er. and Y) has been prepared and characterized. The 31P NMR showed a chemical shift for coordinated Ph3P = O at 37.0 ppm in lower field compared to the chemical shift for free Ph3P = O The vp = o in IR of these complexes were compared with those for (Ph3P = O)4LnCl,. [(Ph3P=O)4LnCl2]+ and [(Ph3P=O)5,LnCl]2+. It was observed that the more the positive charge was on the lanthanidc complex, the stronger the coordination of P = O group to lanthanidc was, and the vp = 0 moved to lower wave number. The vp=0 for these complexes were arranged in the following order:(Ph3P = O)4LnCl3>[(Ph3P = O)4LnCl2]>[(Ph3P = O)5LnCl]2+It was observed also that the Ln-Cl stretching frequency appeared at 230-241cm-1 (for Ln = La-Er) and at 265cm-1 (for Y) and the Cu-Cl stretching and distortion frequencies appeared at 409-412 and 108-114cm-1, respectively. |
| Keywords: lanthanide cuprous complex synthesis infrared spectrum triphenylphosphine oxide |
| 投稿时间：1988-03-30 |
| 摘要点击次数: 1266 |
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| 张明杰,王序昆,荆煦瑛,王积涛.二氯合铜(Ⅰ)酸四(三苯基氧膦)二氯合希土(Ⅲ)配合物的合成和红外光谱研究[J].无机化学学报,1990,6(4):377-380. |
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