| 双Salamo型四肟配体构筑的锌(Ⅱ)配合物:合成,晶体结构和荧光性质 |
| Two Znic (Ⅱ) Complexes Constructed from a Bis (salamo)-type Tetraoxime Ligand:Syntheses,Crystal Structures and Luminescence Properties |
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| 摘要: 通过二水乙酸锌（Ⅱ）和双Salamo型四肟配体6，6'-二乙氧基-双（2，2'-（乙二氧双（氮次甲基）））四酚（H4L）的配位反应，合成了2种锌（Ⅱ）配合物即：[Zn3（L）（OAc）2（H2O）]（1）和[Zn3（L）（OAc）2（H2O）]·[Zn3（L）（OAc）2（CH3OH）（H2O）]·3CH3OH·H2O（2）。该类配合物含有2个Salamo型L4-配体和3个锌（Ⅱ）离子，其中2个锌（Ⅱ）原子位于Salamo型螯合单元的N2O2空腔内。[Zn（L）]螯合物中桥联的酚氧原子进一步和中心的锌（Ⅱ）原子配位。这类结构能通过2个桥联的乙酸根配体稳定，从而使配合物1和5达到电荷平衡。配合物有2种不同的几何构型即扭曲的三角双锥和四方锥（配合物1）或三角双锥和八面体（配合物2）。另外，配合物1和2在激发波长为340和337 nm时能发出强的绿光，其最大发射波长分别为531和536 nm。 |
| 关键词: 双Salamo型四肟配体 锌(Ⅱ)配合物 合成 晶体结构 荧光性质 |
| 基金项目: 国家自然科学基金（No.21361015）资助项目 |
| Abstract: Two Zn (Ⅱ) complexes,[Zn3(L)(OAc)2(H2O)](1) and[Zn3(L)(OAc)2(H2O)]·[Zn3(L)(OAc)2(CH3OH)(H2O)]·3CH3OH·H2O (2) have been synthesized via the complexation of zinc (Ⅱ) acetate dihydrate with a bis (salamo)-type tetraoxime ligand H4L (H4L=6,6'-diethoxy-bis (2,2'-(ethylenedioxybis (nitrilomethylidyne))) tetraphenol).X-ray crystallographic analyses reveal formation of trinuclear structures consisting of two salamo-type L4- ligands and three Zn (Ⅱ) atoms as expected from the analytical data.Two of the three Zn (Ⅱ) atoms are located in the salamo-type L4- chelate moieties.The μ-phenoxo oxygen atoms of the[Zn (L)]chelates further coordinate to centre Zn (Ⅱ) atom.The trinuclear structure is probably stabilized by the two μ-acetato ligands,which neutralize the whole charge of the complexes 1 and 2.There are two kinds of coordination geometries (trigonal bipyramidal and square pyramidal or trigonal bipyramidal and octahedral geometries) in complexes 1 and 2.In addition,complexes 1 and 2 exhibit strong green emission λmax=531 and 536 nm when excited with 340 and 337 nm,respectively. |
| Keywords: bis (salamo)-type tetraoxime ligand Zn(Ⅱ) complex synthesis crystal structure luminescence property |
| 投稿时间：2017-03-17 修订日期：2017-05-08 |
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| 杨玉华,郝静,董银娟,王刚,董文魁.双Salamo型四肟配体构筑的锌(Ⅱ)配合物:合成,晶体结构和荧光性质[J].无机化学学报,2017,33(7):1280-1292. |
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