申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0292176A3
公开(公告)日:1990-09-12
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.
一种过渡金属和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。至少两个取代基是-SH基团,另外两个取代基是-SH、-OH和-NHR。这些络合物是通过在二取代芳香化合物存在的情况下,将四取代芳香化合物与过渡金属化合物反应制备的。根据二取代和四取代化合物的相对比例,所得的络合物可能含有来自四取代化合物的多个残基和两个以上的过渡金属原子。这些络合物具有红外吸收特性,这些特性取决于具体的络合物,含有来自四取代化合物的多个残基的络合物吸收较长波长的辐射。这些化合物可用于提供红外吸收组合物,例如作为玻璃的涂层或中间层。这些络合物可以与一个或多个不同的红外吸收材料一起使用。四取代芳香化合物可以是四硫醚,可以通过将含有至少四个卤素取代基的芳香化合物与碱性硫醇化合物在存在铁和硫的极性溶剂如二甲基甲酰胺中反应制备。