Crystalline Phase Selections in a [Pt(mnt)2]− Ion-Pair Compound Using Solvents
Crystalline Phase Selections in a [Pt(mnt)2]− Ion-Pair Compound Using Solvents
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DOI：
10.1021/cg300064e
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发表时间：
2012-04
影响因子：
3.8
通讯作者：
Wen-bo Pei;Jian-sheng Wu;Wei-Hua Ning;X. Ren;Z. Tian;Y. Sui
中科院分区：
文献类型：
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作者：
Wen-bo Pei;Jian-sheng Wu;Wei-Hua Ning;X. Ren;Z. Tian;Y. Sui
分离、鉴定和表征了 [4′-CH3-Bz-NH2Py][Pt(mnt)2] (1) (4′-CH3-Bz-NH2Py+ = 1-N-(4′-甲基苄基)-4-氨基吡啶鎓和 mnt2– = 马来酰二硫醇盐) 的三个结晶相。 1在CH3CN/CH2Cl2(V:V=1:5)和CH3CN/CH3OH(V:V=1:1)混合溶剂中于室温下蒸发分别得到纯1α·溶剂相和1β相；纯1γ相很容易通过在室温下在CH3OH或CH3OH/CH2Cl2混合溶剂中蒸发1而形成。 1α·溶剂相和1β相在三斜空间群P1中结晶，并且具有非常相似的晶胞参数和堆积结构。 1α·溶剂相和1β相中阴离子和阳离子均形成分离且规则的堆积；此外，阳离子在堆叠中显示出相同的方向。具有单斜空间群P21/c的1γ相表现出阴离子和阳离子分离且不等距的堆叠，并且相邻的阳离子在堆叠中以椅型构象排列。充电辅助接口...
Three crystalline phases of [4′-CH3-Bz-NH2Py][Pt(mnt)2] (1) (4′-CH3-Bz-NH2Py+ = 1-N-(4′-methylbenzyl)-4-aminopyridinium and mnt2– = maleonitriledithiolate) were isolated, identified, and characterized. The pure 1α·solvent and 1β phases can be obtained by the evaporation of 1 in CH3CN/CH2Cl2 (V:V = 1:5) and CH3CN/CH3OH (V:V = 1:1) mixed solvents at ambient temperature, respectively; the pure 1γ phase is easily formed via the evaporation of 1 in CH3OH or mixed solvent of CH3OH/CH2Cl2 at room temperature. 1α·solvent and 1β phases crystallize in the triclinic space group P1 and possess quite similar cell parameters and packing structures. The anions and cations form the segregated and regular stacks in both 1α·solvent and 1β phases; moreover, the cations show the same orientation in a stack. The phase 1γ with monoclinic space group P21/c exhibits the separated and non-equidistant stacks of anion and cation, and the neighboring cations are aligned in a chair-type conformation in a stack. Charge-assisted inter...