Solid-state transformation of [Co(NCS)_2(pyridine)_4] into [Co(NCS)_2(pyridine)_2]_n: From Curie-Weiss paramagnetism to single chain magnetic behaviour

Boeckmann J.; N?ther C.

首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Solid-state transformation of [Co(NCS)_2(pyridine)_4] into [Co(NCS)_2(pyridine)_2]_n: From Curie-Weiss paramagnetism to single chain magnetic behaviour

【24h】

Solid-state transformation of [Co(NCS)_2(pyridine)_4] into [Co(NCS)_2(pyridine)_2]_n: From Curie-Weiss paramagnetism to single chain magnetic behaviour

机译：从[Co（NCS）_2（吡啶）_4]固态转变为[Co（NCS）_2（吡啶）_2] _n：从居里-魏斯顺磁性到单链磁行为

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

Reaction of Co(NCS)_2 with pyridine (pyr) in aqueous solution at room temperature leads to the formation of the pyridine-rich 1:4 compound of composition [Co(NCS)_2(pyridine)_4] (1) reported recently. On heating, the pyridine-rich 1:4 compound transforms into its corresponding pyridine-deficient 1:2 compound of composition [Co(NCS)_2(pyridine) _2]_n (2), which decomposes on further heating. In the crystal structure of compound 2 the metal cations are coordinated by four N-atoms of two pyridine ligands and two N-bonded thiocyanato anions, each in mutually trans orientation, and by two S-atoms of two adjacent thiocyanato anions in a slightly distorted octahedral geometry. The thiocyanato anions bridge the metal cations forming one-dimensional polymeric chains. IR spectroscopic investigations on the pyridine-deficient 1:2 compound prepared in thermal decomposition are in accordance with bridging thiocyanato anions. Magnetic measurements of the pyridine-rich 1:4 compound and pyridine-deficient 1:2 compound reveal different behaviour with Curie-Weiss paramagnetism for compound 1 and single chain magnetic behaviour for compound 2, with a Mydosh-parameter φ = 0.12 and an effective energy barrier (-U _(eff)/k_B) of 62.5 K for the spin relaxation.

机译：室温下，Co（NCS）_2与吡啶（pyr）在水溶液中的反应导致形成了组成为[Co（NCS）_2（吡啶）_4]（1）的富含吡啶的1：4化合物。加热时，富含吡啶的1：4化合物转变为其相应的组成[Co（NCS）_2（吡啶）_2] _n（2）的缺乏吡啶的1：2化合物，该化合物在进一步加热时分解。在化合物2的晶体结构中，金属阳离子由两个吡啶配体的四个N原子和两个相互键合的N键合的硫氰酸根阴离子配位，并且与两个相邻的硫氰酸根阴离子的两个S原子配位，并稍微变形八面体几何。硫氰酸根阴离子桥接金属阳离子，形成一维聚合物链。红外光谱法研究了热分解制得的吡啶缺陷型1：2化合物与桥联的硫氰酸根阴离子的关系。富吡啶的1：4化合物和吡啶缺乏的1：2化合物的磁性测量显示，化合物1的居里-魏斯顺磁性和化合物2的单链磁行为具有不同的行为，Mydosh参数φ= 0.12，有效自旋弛豫的能量垒（-U _（eff）/ k_B）为62.5K。

著录项

来源
《Dalton transactions: An international journal of inorganic chemistry》 |2010年第45期|共8页
作者
Boeckmann J.; N?ther C.;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类化学;
关键词

相似文献

外文文献
中文文献
专利

1. Solid-state transformation of [Co(NCS)_2(pyridine)_4] into [Co(NCS)_2(pyridine)_2]_n: From Curie-Weiss paramagnetism to single chain magnetic behaviour [J] . Boeckmann J., N?ther C. Dalton transactions: An international journal of inorganic chemistry . 2010,第45期

机译：从[Co（NCS）_2（吡啶）_4]固态转变为[Co（NCS）_2（吡啶）_2] _n：从居里-魏斯顺磁性到单链磁行为
2. Magnetic Properties of 1:4 Complexes of Co~(II)X_2 (X = NCO~-,NCS~-,and Br~-)with 4-(N-tert-Butylaminoxyl)pyridine.Antiferromagnets in Crystalline States and Single-Molecule Magnets in Frozen Solutions [J] . Shinji Kanegawa, Satoru Karasawa, Motohiro Nakano Bulletin of the Chemical Society of Japan . 2006,第9期

机译：Co〜（II）X_2（X = NCO〜-，NCS〜-和Br〜-）与4-（N-叔丁基氨基甲酰基）吡啶的1：4配合物的磁性。晶体和单分子反铁磁体冷冻解决方案中的磁铁
3. Two potential pyridine-borane oligomer and polymer building blocks.Structural characterisation of [NC_5H_4N.B_10H_12.,NC_5H_4.C_5H_4N] and [Me_2S.B_10H_12.NC_4H_4B_10H_12.SMe_2] by conventional and synchrotron X-ray methods [J] . Londesborough Michael G.S., Price Caroline Inorganic Chemistry Communications . 1999,第0期

机译：两种潜在的吡啶-硼烷低聚物和聚合物结构单元。[NC_5H_4N.B_10H_12。，NC_5H_4.C_5H_4N]和[Me_2S.B_10H_12.NC_4H_4B_10B_10H_12.SMe_2]的结构表征
4. Single and Dual nc-ITO and nc-ZnO Embedded ZrHfO High-k Nonvolatile Memories [C] . Chen-Han Lin, Yue Kuo Symposium on nanocrystal embedded dielectrics for electronic and photonic devices;Meeting of the Electrochemical Society . 2011

机译：单和双nc-ITO和nc-ZnO嵌入式ZrHfO高k非易失性存储器
5. Photoluminescence, Dual-donor Energy Transfer and Single X-ray Crystallographic Studies of Eu3+ and Tb3+ complexes with pyridines and triazaphosphaadamantane oxide (TPAO) ligands. [D] . Forcha, Derick Akaju. 2013

机译：Eu3 +和Tb3 +配合物与吡啶和三氮杂磷金刚烷氧化物（TPAO）配体的光致发光，双供体能量转移和单X射线晶体学研究。
6. SYNTHESIS OF CHIRAL PYRIDINE BIS(OXAZOLINE) LIGANDS FOR NICKEL-CATALYZED ASYMMETRIC NEGISHI CROSS-COUPLINGS OF SECONDARY ALLYLIC CHLORIDES WITH ALKYLZINCS: 26-BIS(4S)-45-DIHYDRO-4-(2-PHENYLETHYL)-2-OXAZOLYL-PYRIDINE [O] . Sha Lou, Gregory C. Fu -1

机译：手性吡啶合成双（恶唑啉）的配体的镍 - 催化的不对称Negishi交叉联轴器sECONDaRY烯丙基氯化物WITH aLKYLZINCs作者：26-双（4s）-45-二氢-4-（2-苯乙基）-2-恶唑基吡啶
7. Metamagnetic Behavior of Linear Chain Pyridine Compounds: Co(Pyridine)\u3csub\u3e2\u3c/sub\u3eCl\u3csub\u3e2\u3c/sub\u3e, Fe(Pyridine)\u3csub\u3e2\u3c/sub\u3eCl\u3csub\u3e2\u3c/sub\u3e, Fe(Pyridine)\u3csub\u3e2\u3c/sub\u3e(NCS)\u3csub\u3e2\u3c/sub\u3e and Ni(Pyridine)\u3csub\u3e2\u3c/sub\u3eCl\u3csub\u3e2\u3c/sub\u3e [O] . Foner, S., Frankel, R. B., Reiff, W. M., 1975

机译：线性链吡啶化合物的超磁行为：Co（吡啶）\ u3csub \ u3e2 \ u3c / sub \ u3eCl \ u3csub \ u3e2 \ u3c / sub \ u3e，Fe（吡啶）\ u3csub \ u3e2 \ u3c / sub \ u3eCl \ u3csub \ u3e2 \ u3c / sub \ u3e，Fe（吡啶）\ u3csub \ u3e2 \ u3c / sub \ u3e（NCS）\ u3csub \ u3e2 \ u3c / sub \ u3e和Ni（吡啶）\ u3csub \ u3e2 \ u3c / sub \ u3eCl \ u3csub \ u3e2 \ u3c / sub \ u3e

Solid-state transformation of [Co(NCS)_2(pyridine)_4] into [Co(NCS)_2(pyridine)_2]_n: From Curie-Weiss paramagnetism to single chain magnetic behaviour

摘要

著录项

相似文献

相关主题

期刊订阅