Synthesis and spectral characterization of some oxo-centered, trinuclear mixed-valence iron thiocarboxylates
作者:B.P Baranwal、Tarkeshwar Gupta
DOI:10.1016/s1386-1425(02)00232-9
日期:2003.3
carboxylate and thiocarboxylate anions along with upsilon(asym)(Fe(3)O) vibrations in the complexes. Mössbauer studies revealed two resolved quadrupole doublets at 120-315 K confirming the presence of Fe(II) and Fe(III) moieties in the complexes. This was supported by the observed electronic spectral bands in the complexes at room temperature. The spectrum showed a band at around 13,800 cm(-1) which indicated
某些具有通式[Fe(II)Fe(III)(2)O(SOCR)(6)(H(2)O)的硫代羧酸和直链脂肪酸的混合价Fe(II)Fe(III)配合物(3)]和[Fe(II)Fe(III)(2)O(SOCR)(3)(OOCR')(3)(CH(3)OH)(3)](其中,R = CH(3 )或C(6)H(5)和R'= C(13)H(27),C(15)H(31)或C(17)H(35))并通过元素分析,光谱表征(红外,电子和Mössbauer)研究,摩尔电导和磁化率测量。红外光谱表明,配合物中羧酸根和硫代羧酸根阴离子的桥连性质以及upsilon(asym)(Fe(3)O)振动。Mössbauer研究发现在120-315 K处有两个分辨的四极双峰,确认了复合物中Fe(II)和Fe(III)部分的存在。室温下在配合物中观察到的电子光谱带支持了这一点。光谱显示在约13,800 cm(-1)处有一个条带,表明有间