申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0292176A2
公开(公告)日:1988-11-23
Complexes of a transition metal and a tetrasubstituted aromatic compound which contain at least two transition metal atoms. At least two of the substituents are -SH groups, the other two substituents being -SH, -OH and -NHR. The complexes are prepared by reacting the tetrasubstituted aromatic compound with a transition metal compound in the presence of a disubstituted aromatic compound. Depending on the relative proportions of the di- and tetra-substituted compounds, the resulting complex may contain more than one residue from the tetra-substituted compound and more than two transition metal atoms. The complexes possess infra-red absorbing properties which vary in dependence on the particular complex, the complexes with more than one residue from the tetrasubstituted compound absorbing radiation of longer wavelength. The compounds can be used to provide infra-red absorbing compositions, for example as a coating or inter-layer for glass. The complexes may be used together with one or more different infra-red absorbing materials. The tetra-substituted aromatic compound may be a tetra-thiol and this can be prepared from an aromatic compound containing at least four halogen substituents by reaction with an alkaline thiol compound in the presence of iron and sulphur in a polar solvent such as dimethyl formamide.
过渡金属与四取代芳香化合物的络合物,其中至少含有两个过渡金属原子。其中至少两个取代基为-SH 基团,另外两个取代基为-SH、-OH 和-NHR。这些配合物是通过四取代芳香族化合物与过渡金属化合物在二取代芳香族化合物存在下发生反应而制备的。根据二取代化合物和四取代化合物的相对比例,生成的络合物可能含有一个以上的四取代化合物残基和两个以上的过渡金属原子。这些复合物具有红外线吸收特性,这种特性因特定复合物而异,含有一个以上四取代化合物残基的复合物可吸收波长较长的辐射。这些化合物可用于提供红外线吸收成分,例如玻璃的涂层或中间层。复合物可与一种或多种不同的红外线吸收材料一起使用。四取代芳香族化合物可以是四硫醇,它可以由含有至少四个卤素取代基的芳香族化合物通过与碱性硫醇化合物在铁和硫的存在下在极性溶剂(如二甲基甲酰胺)中反应制备而成。