Growth and characterisation of potassium cobalt nickel sulfate hexahydrate for UV light filters

摘要

A new single crystal for ultraviolet light filter, KCNSH (Potassium Cobalt Nickel Sulfate Hexahydrate) was designed and its crystal structure was studied using X-ray diffraction in this paper. The empirical of the title compound is K2Co0.1Ni0.9(SO4)(2 center dot)6H(2)O with formula weight 437.15. KCNSH crystal belongs to the monoclinic space group P2(1)/c, a=6.1390(3) angstrom, b=12.1839(6) angstrom, c=9.0095(4) angstrom, alpha=gamma=90 degrees, beta=105.060(2)degrees, V=650.74(5)angstrom(3), Z=2, Dc=2.231g/cm(3). Using the cooling solution method, we have grown a deep green KCNSH crystal with dimension of 12x 12 x40mm(3). The transmission spectrum of KCNSH in the range from UV to near IR wavelengths, its thermal properties, and the relationship between the structure and optical transmission properties are also studied and further discussed in this paper. (C) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.