Some water-soluble Schiff-base complexes of nickel(II): the role of water
Some water-soluble Schiff-base complexes of nickel(II): the role of water
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镍(II)的一些水溶性希夫碱配合物：水的作用
DOI：
10.1039/dt9850001451
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
P. Missen
中科院分区：
文献类型：
--
作者：
D. Evans;P. Missen
合成了[NN′-propane-1，3-diylbis(salicylideneimine-5′-sulphonato)(4–)]nickelate(II)，Na2[Ni(Salpds)]二钠和bis[salicylaldoxime-5-sulphonato(2–)]nickelate(II)二钠。电子光谱和磁化率测量表明，在水溶液中，两个水分子配位生成的正方形和六配位物种之间存在平衡。报道了Na2[Ni(Salpds)]体系的热力学参数。室温下的IR。固体(抗磁性)Na2[Ni(Salpds)]·2H2O的光谱在O-H伸缩区有两个分辨率很好的谱带，其中一个谱带非常尖锐(带宽16 cm-1)，出现在一个异常高的频率(3630 cm-1)。国税局。具有不同氚化度的样品的光谱表明，这两个水分子在结晶学上是等价的，具有C1位对称性。在每个H2O中，一个氢原子几乎是非氢键的，而另一个参与了中等强度的氢键。
Disodium [NN′-propane-1,3-diylbis(salicylideneimine-5′-sulphonato)(4–)]nickelate(II), Na2[Ni(salpds)], and disodium bis[salicylaldoxime-5-sulphonato(2–)]nickelate(II) have been prepared. Electronic spectra and magnetic susceptibility measurements show that in aqueous solution there is an equilibrium between the square-planar forms and six-co-ordinate species produced by co-ordination of two water molecules. Thermodynamic parameters are reported for the Na2[Ni(salpds)] system. The room-temperature i.r. spectrum of solid (diamagnetic) Na2[Ni(salpds)]·2H2O gives two well resolved bands in the O–H stretching region One of these is extremely sharp (bandwidth 16 cm–1) and occurs at an unusually high frequency (3 630 cm–1). The i.r. spectra of samples having various extents of deuteriation show that the two water molecules are crystallographically equivalent, with C1 site symmetry. In each H2O, one hydrogen atom is almost non-hydrogen-bonded while the other is involved in a hydrogen bond of moderate strength.