一种新型磁天平在配合物磁化率测定中的应用

doi:10.3866/PKU.DXHX201906017

University Chemistry ›› 2020, Vol. 35 ›› Issue (2): 58-63.doi: 10.3866/PKU.DXHX201906017

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Application of a Novel Magnetic Balance in the Determination of Magnetic Susceptibility of Complex Compounds

Xiaoju Tang*(),Aihui Yan,Limin Huang

Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong Province, P. R. China

Received:2019-06-10 Accepted:2019-07-23 Published:2019-08-06
Contact: Xiaoju Tang E-mail:tangxj@sustech.edu.cn
Supported by:
南方科技大学高等教育教学改革项目(Y01051883);广东省实验教学示范中心建设项目(SJZLGC201601)

Abstract

Abstract:

In the magnetic susceptibility measurement experiment, the traditional method is to use the Gouy magnetic balance, an instrument which is cumbersome and complicated to operate. This paper provides a new type of benchtop magnetic balance for the determination of the magnetic susceptibility of complexes. The basic principle, method, operation steps and data analysis of this magnetic balance are introduced by measuring the magnetic susceptibility of three commonly used complexes. By comparing the measured values with standards, it is apparent that this portable instrument has smaller measurement error and higher precision, which is suitable for experimental teaching and scientific research.

Key words: Magnetic balance, Magnetic susceptibility, Improvement of the experiment

Xiaoju Tang,Aihui Yan,Limin Huang. Application of a Novel Magnetic Balance in the Determination of Magnetic Susceptibility of Complex Compounds[J].University Chemistry, 2020, 35(2): 58-63.

Figures/Tables 7

References 10

1	庄继华; 陆靖; 戴维林; 严曼明; 王文宁. 物理化学实验, 北京: 高等教育出版社, 2004, 159- 387.159-164, 386-387
2	方能虎; 陈先阳; 孟庆华. 实验化学(下册), 北京: 科学出版社, 2005, 87- 93.
3	郑秋容; 顾文秀; 朴银实; 姚国胜; 高海燕; 鲍明伟; 张革新; 赵泳; 周小兰; 邵山欢; 等. 物理化学实验, 北京: 中国纺织出版社, 2010, 141- 145.
4	孙尔康; 张剑荣; 刘勇健; 白同春; 柳闽生; 倪良; 沈彬; 王新红; 庄虹; 刘家辉; 等. 物理化学实验南京:南京大学出版社, 2009, 132- 136.
5	陈珏姝; 麻英; 张连庆; 常爱玲. 大学化学, 2004, 19 (5), 39.
6	阚锦晴; 刘正铭; 张国林. 实验室研究与探索, 1997, (6), 85.
7	Evans D. F. J. Chem. Soc. (A) 1967, 1670.
8	Evans D. F. J. Phys. E:Sci. Instrum. 1974, 7, 247. doi: 10.1088/0022-3735/7/4/007
9	袁汝明; 傅钢; 韩国彬. 大学化学, 2012, 27 (2), 10.
10	高全昌; 张国鼎. 西北大学学报(自然科学版), 1995, 25 (5), 560.

样品	序号	M₀/g	R₀	(m + m₀)/g	R	h/mm	m/g	χ_g/(cm³∙g⁻¹)
FeSO₄∙7H₂O	1	0.8129	−37	1.1198	3590	34.0	0.3069	4.191 × 10⁻⁵
	2	0.8129	−37	1.0841	3560	30.9	0.2712	4.018 × 10⁻⁵
	3	0.8129	−37	1.0868	3436.7	30.8	0.2739	3.906 × 10⁻⁵
(NH₄)₂Fe(SO₄)₂∙6H₂O	1	0.8148	−37.7	1.0664	2420	30.9	0.2516	3.018 × 10⁻⁵
	2	0.8148	−37.7	1.0874	2483.3	33.1	0.2726	3.058 × 10⁻⁵
	3	0.8148	−37.7	1.0844	2463.3	33.2	0.2696	3.080 × 10⁻⁵
K₄[Fe(CN)₆]∙3H₂O	1	0.8153	−37	1.0915	−72	32.0	0.2762	−4.055 × 10⁻⁷
	2	0.8153	−37	1.0804	−66.3	34.1	0.2651	−3.773 × 10⁻⁷
	3	0.8153	−37	1.0957	−69.7	33.0	0.2804	−3.845 × 10⁻⁷

样品	χ_m ^a/(cm³∙mol⁻¹)	RSD/%	χ_m ^*/(cm³∙mol⁻¹) ^[1]	相对误差/%
FeSO₄∙7H₂O	0.0111	2.43	0.0112	−0.9
(NH₄)₂Fe(SO₄)₂∙6H₂O	0.0120	1.00	0.0124	−3.3
K₄[Fe(CN)₆]∙3H₂O	0.000164	3.78	0.000172	−4.9

样品	R₀	R	d/(g∙cm⁻³)	10⁶χ_g ^a/(cm³∙g⁻¹)	10⁶χ_g ^*/(cm³∙g⁻¹) ^[1]	相对误差/%
H₂O	−37	−98.0	0.9963	−0.713	−0.720	1.0
CH₃OH	−37	−82.3	0.7918	−0.665	−0.668	0.4
C₂H₅OH	−37	−87.3	0.816	−0.719	−0.728	1.2

Application of a Novel Magnetic Balance in the Determination of Magnetic Susceptibility of Complex Compounds

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