Syntheses and Magnetic Properties of Ni(II) Dimers

Ni(II)二聚体的合成及磁性

• 批准号: 03640523
• 负责人: TOKII Tadashi
• 金额: $ 0.13万
• 依托单位: Saga University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03640523/
• 关键词: Magnetism; Magnetic Interaction; Nickel(II)Carboxylate Complex; Binuclear Ni(II) Complex; Carboxylate Bridge; カルボキシラト架橋; 二核ニッケル(II)錯体; カルボン酸ニッケル(II)錯体; 反強磁性的相互作用; スピン平衡

Dimeric Ni(II) carboxylates complexes, [Ni(RCOO)_8.L)]_2 (R=Me_3,Et_2CH,Me_2Phc, or MePh_2C; L=pyridine derivatives or tri-phenylphosphine), have been prepared and characterized by magnetic susceptibilities and X-ray structure analyses. All these complexes have subnormal magnetic moments (1.64-2.34 B.M.) at the room temperature. The complexes have the dimeric structure with four carboxylate bridges found in numerous copper(II) acetate adducts. The Ni atom has a slightly distorted square-pyramidal environment with four O atoms of the bridging carboxylates in the basal plane and an N or P atom in the axial position.Magnetic susceptibilities were determined in the temperature range 80-300 K by the Faraday method. The cryomagnetic data of the complexes were analyzed with Eq. (1), which is a modified expression of a channel model developed by Rakitin et al.,where Pi is mole fraction of each component, and other symbols have their usual meanings. The new parameter n is the number of unpaired electrons on a metal. Magnetic susceptibility data observed for the present complexes are well represented by Eq. (1) rather than by the Heisenberg model.

合成了二聚羧酸镍配合物[Ni（RCOO）_8.L）]_2（R= Me_3，Et_2CH，Me_2Phc，或MePh_2C; L=吡啶衍生物或三苯基膦），并通过磁性和X-射线结构分析进行了表征。这些配合物的磁矩均低于正常值（1.64-2.34 B.M.）在室温下。该配合物具有二聚体结构，在许多乙酸铜（II）加合物中发现了四个羧酸桥。Ni原子处于轻微畸变的四方锥环境中，四个O原子位于基面，一个N或P原子位于轴向.用法拉第方法测定了80-300 K温度范围内的磁化率.配合物的冷磁数据用Eq. (1)，其是由Rakitin等人开发的信道模型的修改表达，其中Pi是每种组分的摩尔分数，其他符号具有其通常含义。新的参数n是金属上未成对电子的数量。磁化率数据观察到本复合物是很好地代表了方程。(1)而不是海森堡模型

项目成果

Tadashi Tokii: "Synthesis,structure,and Magnetic Properties of a Novel Copper(II) Analogue of the Hemerythrin Active Center" Chem.Lett.1091-1094 (1992)

Tadashi Tokii：“血红蛋白活性中心的新型铜 (II) 类似物的合成、结构和磁性” Chem.Lett.1091-1094 (1992)

Hu HUANG: "The Magnetic Properties of the Tetranuclear Nickel(II)Complex with[(3,5-Dichloro-2-pyridyl)azo]-8-hydroxyquinoline-5-sulfonate" J.Coord.Chem.25. 357-361 (1992)

黄虎：“[(3,5-二氯-2-吡啶基)偶氮]-8-羟基喹啉-5-磺酸盐四核镍(II)络合物的磁性”J.Coord.Chem.25。

M.Mororoka: "Dimeric Nickel(II) Carboxylates and a Silanecarboxylate: [Ni(Me_3CCOO)_2(2,5-lutidine)]_2, [Ni(MePh_2CCOO)_2(quinoline)]_2・2CH-Cl_3, [Ni(Me_2PhCCOO)_2(quinoline)]_2, [Ni(Me_3CCOO)_2(2-ethyl-pyridine)]_2, [Ni(Me_3CCOO)_2(2-picoline)]_2 and [Ni

M.Mororoka：“二聚镍(II)羧酸盐和硅烷羧酸盐：[Ni(Me_3CCOO)_2(2,5-二甲基吡啶)]_2，[Ni(MePh_2CCOO)_2(喹啉)]_2・2CH-Cl_3，[Ni( Me_2PhCCOO)_2(喹啉)]_2、[Ni(Me_3CCOO)_2(2-乙基吡啶)]_2、[Ni(Me_3CCOO)_2(2-甲基吡啶)]_2 和 [Ni

M.Mikuriya: "Binuclear Nickel(II) Complexes of Shiff Bases Derived from Salicylaldehydes and 1,n-Diamino-n'-hydroxyalkanes(n,n'=3,2;4,2; and 5,3) Having an Endogenous Alkoxo Bridge and a Pyrazolate Exogenous Bridge" Bull. Chem. Soc. Jpn.65. 334-339 (1992)

M.Mikuriya：“衍生自水杨醛和 1,n-二氨基-n-羟基烷烃 (n,n=3,2;4,2; 和 5,3) 的双核镍 (II) 配合物具有内源性

Mitsuo Morooka: "Dimeric Nickel(II)Carboxylates and a Silanecarboxylate:[Ni(Me_3CCOO)_2(2,5-lutidine)]_2,[Ni(Meph_2CCOO)_2(quinoline)]_2・2CH-Cl_3,[Ni(Me_2phCCOO)_2(quinoline)]_2,[Ni(Me_3CCOO)_2(2-ethyl-pyridine)]_2,[Ni(Me_3CCOO)_2(2-picoline)]_2 and [Ni(M

Mitsuo Morooka：“二聚镍(II)羧酸盐和硅烷羧酸盐：[Ni(Me_3CCOO)_2(2,5-二甲基吡啶)]_2,[Ni(Meph_2CCOO)_2(喹啉)]_2·2CH-Cl_3,[Ni(Me_2phCCOO) ) )_2(喹啉)]_2,[Ni(Me_3CCOO)_2(2-乙基吡啶)]_2,[Ni(Me_3CCOO)_2(2-甲基吡啶)]_2 和 [Ni(M