The many faces of rare earth carbodiimide compounds

Unverfehrt L.; Str?bele M.; Glaser J.; Meyer H.-J.

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The many faces of rare earth carbodiimide compounds

机译：稀土碳二亚胺化合物的许多方面

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Solid state metathesis reactions have been established as a successful tool in syntheses of rare earth carbodiimide compounds. Current results evidence the new compounds LiRE(CN_2)_2 with RE = La, Ce and the carbodiimide nitride Ce_3(CN_2)_3N. LiRE(CN _2)_2 compounds were synthesized by solid state metathesis reactions between REF_3 and Li_2(CN_2) in 1:2 molar ratio, Ce_3(CN_2)_3N was obtained by thermal conversion of LiCe(CN_2)_2. Crystal structures of LiLa(CN_2)_2 and Ce_3(CN_2)_3N were determined from X-ray single crystal data (LiLa(CN_2) _2: P21/m, a = 542.4(2) pm, b = 379.16(7) pm, c = 1013.0(3) pm, β = 101.35(3) °; Ce_3(CN_2J_3N: P2,2,2, a = 672.97(9) pm, b = 1309.8(2) pm, c = 1697.7(3) pm) and Li.Ce(CN _2)_2 was assigned from, indexed X-ray powder diffraction data (LiCe(CN_2)_2: a = 541.9(1) pm, b = 374.50(8) pm, c = 1008.8(2) pm, β}= 101.21(1)°). The crystal structure of LiLa(CN _2)_2 represents a layer-like arrangement of ions as typical for this type of compounds. The crystal structure of Ce_3(CN _2)_3N reveals chains of [NCe_4] tetrahedra running parallel to each other, and trigonal prismatic to trigonal antiprismatic arrangements of six distinctly interconnected [Ce_3-NCN-Ce _3] units. Both structures contain (CN_2)~(2-) ions deviating from their ideal D_(∞h) symmetry, with C-N distances ranging between 121 and 126 pm and N-CN angles near 180°.

机译：固态复分解反应已被确定为合成稀土碳二亚胺化合物的成功工具。目前的结果表明，RE = La，Ce和氮化碳二亚胺Ce_3（CN_2）_3N的新化合物LiRE（CN_2）_2。通过REF_3与Li_2（CN_2）的摩尔比为1：2的固相复分解反应合成LiRE（CN _2）_2化合物，通过LiCe（CN_2）_2的热转化得到Ce_3（CN_2）_3N。从X射线单晶数据确定LiLa（CN_2）_2和Ce_3（CN_2）_3N的晶体结构（LiLa（CN_2）_2：P21 / m，a = 542.4（2）pm，b = 379.16（7）pm， c = 1013.0（3）pm，β= 101.35（3）°; Ce_3（CN_2J_3N：P2,2,2，a = 672.97（9）pm，b = 1309.8（2）pm，c = 1697.7（3）pm）并从索引的X射线粉末衍射数据中分配Li.Ce（CN _2）_2（LiCe（CN_2）_2：a = 541.9（1）pm，b = 374.50（8）pm，c = 1008.8（2）pm ，β} = 101.21（1）°。LiLa（CN _2）_2的晶体结构代表了这类化合物典型的离子层状排列，Ce_3（CN _2）_3N的晶体结构揭示了[NCe_4]四面体相互平行，并由六个明显互连的[Ce_3-NCN-Ce _3]单元的三棱柱形到三角反棱镜排列，两个结构均包含（CN_2）〜（2-）离子，它们偏离其理想D_（∞） h）对称，CN距离介于121和126 pm之间，N-CN角接近180°。

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《Zeitschrift fur Anorganische und Allgemeine Chemie》 |2009年第12期|共6页
作者
Unverfehrt L.; Str?bele M.; Glaser J.; Meyer H.-J.;
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正文语种 eng
中图分类化学;
关键词
Carbodiimide; Fluorides; Metathesis; Rare earths; X-ray diffraction;

机译：碳二亚胺;氟化物;易位;稀土;X射线衍射;

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专利

1. The many faces of rare earth carbodiimide compounds [J] . Unverfehrt L., Str?bele M., Glaser J., Zeitschrift fur Anorganische und Allgemeine Chemie . 2009,第12期

机译：稀土碳二亚胺化合物的许多方面
2. Catalytic addition of amine N-H bonds to carbodiimides by half-sandwich rare-earth metal complexes: Efficient synthesis of substituted Guanidines through amine protonolysis of rare-earth metal guanidinates [J] . Zhang WX, Nishiura M, Hou ZM Chemistry: A European journal . 2007,第14期

机译：半三明治稀土金属配合物催化碳二亚胺上胺N-H键的催化加成：稀土金属胍盐的胺质子分解，可高效合成取代的胍
3. Formation of complex three- and one-dimensional interpenetrating networks within carbodiimide chemistry: NCN2--coordinated rare-earth-metal tetrahedra and condensed alkali-metal iodide octahedra in two novel lithium europium carbodiimide iodides, LiE [J] . Liao WP, Hu CH, Kremer RK, Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 2004,第19期

机译：在碳二亚胺化学中形成复杂的三维和一维互穿网络：在两种新型的锂碳二亚胺碘化锂LiE中，NCN2配位的稀土金属四面体和缩合碱金属碘化物八面体
4. Distribution of Rare Earths in Liver of Mice Administered with Chloride Compounds of 12 Rare Earths [C] . A.Shinohara, M.Chiba International Conference on Rare Earths . 1999

机译：用12个稀土氯化物化合物给药肝脏肝脏稀土分布
5. A KINETIC STUDY OF THE OXIDATION OF RARE-EARTH METALS, SOLUBILITY OF RARE-EARTH METALS IN THEIR NITRIDES, AND INFRARED STUDIES OF SOME RARE-EARTH COMPOUNDS [D] . VORRES, KARL SPYROS. 1958

机译：稀土金属的氧化，稀土金属在氮化物中的溶解度的动力学研究以及某些稀土化合物的红外研究
6. Exposure metabolism and toxicity of rare earths and related compounds. [O] . S Hirano, K T Suzuki 1996

机译：稀土及相关化合物的暴露代谢和毒性。
7. The Many Faces of Rare Earth Carbodiimide Compounds [O] . Meyer, Hans-Juergen 2009

机译：稀土碳二亚胺化合物的许多面孔
8. Investigations of Transition Metal - Rare Earth Alloys. Preparation, Structures, Magnetic, and Permanent Magnet Properties of Rare Earth-Iron and Cobalt Intermetallic Compounds [R] . Lihl, F. 1969

机译：过渡金属 - 稀土合金的研究。稀土 - 铁和钴金属间化合物的制备，结构，磁性和永磁性能

The many faces of rare earth carbodiimide compounds

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