两个含氮配体配合物固体荧光材料的合成、晶体结构及性质

Synthesis,Crystal Structures and Properties of Two Solid Luminescent Materials of Complexes Containing N-donor Ligands

采用缓慢蒸发溶剂法在水中合成了两个含氮配体配合物[Co(phen)3]·3,5-(SO3)2H2Cat·6H2O(1)和[M(py)3(H2O)3]·(1,5-nds)(2)(H2Cat=1,2-二羟基苯阴离子,M=Co0.88Cu0.12,1,5-nds=1,5-萘二磺酸根离子,phen=1,10-邻菲罗啉,py=吡啶)。配合物1中,钴离子与三个1,10-邻菲罗啉配位形成[Co(phen)3]2+。六个自由的水分子与3,5-(SO3)2H2Cat阴离子通过氢键相互连接形成二维的层状结构。配合物2中,中心离子是由钴离子和铜离子构成,其与三个吡啶和三个水分子配位,构成[M(py)3(H2O)3]2+。自由的1,5-nds阴离子通过氢键连接[M(py)3(H2O)3]2+,形成三维网状结构。室温下两个配合物均具有荧光发射峰,其最大发射峰分别在551 nm和340 nm。它们的荧光发射的主要原因分别是配体间电荷转移和配体-金属间电荷转移。

The two complexes containing N-donor ligands·[Co（ phen）3]·3,5-（ SO3）2H2Cat ·6H2O（ 1） and [M（ py）3（ H2O）3]·（ 1,5-nds）（ 2）（ H2 Cat = 1,2-dihydroxybenzene anion,M = Co0. 88Cu0. 12,1,5-nds = 1,5-naphthalenedisulfonic anion,phen = 1,10-phenanthroline,py = pyridine） were synthesized by the slow solvent evaporation method. In the complex 1,the cobalt ion coordinates with three 1,10-phenanthroline ligands to generate the [Co（ phen）3]2 ＋cation. The six uncoordinated water molecules connect to the 3,5-（ SO3）2H2Cat anions to form two-dimensional layered structure through the hydrogen bonds. In the complex 2,the central metal ion is composed of cobalt and cooper ions,which coordinates with three pyridine and three water molecules to form the [M（ py）3（ H2O）3]2 ＋cation. The free 1,5-nds anions connect the [M（ py）3（ H2O）3]2 ＋cations to form the three-dimensional network structure through the hydrogen bonds. The complexes exhibit the luminescence with emission maximum at551 nm and 340 nm at room temperature,which is attributed to the ligand-to-ligand and ligand-to-metal charge transfers,respectively.