| 2D层状焦磷酸锰(Ⅱ)[NH4]2[Mn3(P2O7)2(H2O)2]的结构和磁性研究 |
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| 引用本文： | 石磊,于吉红,李乙,徐如人,高松.2D层状焦磷酸锰(Ⅱ)[NH4]2[Mn3(P2O7)2(H2O)2]的结构和磁性研究[J].无机化学学报,2005,21(2):245-248. |
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| 作者姓名： | 石磊 于吉红 李乙 徐如人 高松 |
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| 作者单位： | 1. 吉林大学无机合成与制备化学国家重点实验室,化学学院,长春,130023
2. 北京大学稀土材料化学与应用国家重点实验室,化学与分子工程学院,北京,100870 |
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| 基金项目： | 国家重点基础研究发展规划项目(No.G2000077507). |
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| 摘 要： | A two-dimensional layered manganese(Ⅱ) pyrophosphate, NH4]2Mn3(P2O7)2(H2O)2] (1), has been synthesized hydrothermally. Its structure is determined by single-crystal X-ray diffraction analysis. Its structure is built up by MnO6 octahedra and P2O7 units, with ammonium NH4+ cations residing in the interlayer regions. The manganese pyrophosphate layer consists of infinite chains of cis and trans edge sharing MnO6 octahedra linked by P2O7 units. Magnetic susceptibility measurements show that this compound exhibits ferrimagnetic-like ordering below 3.2 K. Further study shows that there are two possible superexchange pathways via the oxygen anions in Mn2+ ions. Owing to the different bridging modes of O2-, the competition between ferromagnetic interactions and antiferromagnetic interactions in Mn2+ ions results in the ferrimagnetic behavior of 1.
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| 关 键 词： | 水热合成 焦磷酸锰 晶体结构 亚铁磁性 |
| 文章编号： | 1001-4861(2005)02-0245-04 |
| 收稿时间： | 6/8/2004 12:00:00 AM |
| 修稿时间： | 2004年6月8日 |
Structure and Magnetic Properties of a Two-dimensional Layered Manganese(Ⅱ) Pyrophosphate [NH4]2[Mn3(P2O7)2(H2O)2] |
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| SHI Lei,YU Ji-Hong,LI Yi,XU Ru-Ren and GAO Song.Structure and Magnetic Properties of a Two-dimensional Layered Manganese(Ⅱ) Pyrophosphate [NH4]2[Mn3(P2O7)2(H2O)2][J].Chinese Journal of Inorganic Chemistry,2005,21(2):245-248. |
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| Authors: | SHI Lei YU Ji-Hong LI Yi XU Ru-Ren and GAO Song |
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| Abstract: | |
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| Keywords: | hydrothermal synthesis manganese pyrophosphate crystal structure ferrimagnetic-like ordering |
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