Solid state reaction of metal halides MXn (n = 1 or 2) with stoichiometric amounts of sodium chalcogenide (Na2S2 or Na2E where E = S, Se or Te) at 300 °C for 48 h in evacuated ampoules affords a range of transition and main-group metal chalcogenides: ME2 (M = Fe or Co, E = S or Te); M(1 − x)E (M = Fe or Co, E = S); Ag2E (E = S, Se or Te), Ni(1 − x)E (E = S, Se or Te); NiS2, MnS, FeSe, SnSe and SnTe along with co-formed salt. Washing of the highly sintered, fused product mixture with water resulted in isolation of crystalline binary chalcogenides, typically of a single phase in good yield (90%). The products were characterised by X-ray powder diffraction, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDXA) and i
nfrared spectroscopy.
金属卤化物 MXn(n = 1 或 2)与一定量的氢化
钠(Na2S2 或 Na2E,其中 E = S、
SE 或 Te)在 300 °C、48 小时的真空安瓿瓶中发生固态反应,生成一系列过渡族和主族
金属
氢化物:ME2(M = Fe 或 Co,E = S 或 Te);M(1 - x)E(M = Fe 或 Co,E = S);Ag2E(E = S、
SE 或 Te),Ni(1 - x)E(E = S、
SE 或 Te);NiS2、MnS、Fe
SE、Sn
SE 和 SnTe 以及共形盐。用
水清洗高度烧结、熔融的产品混合物,可分离出结晶的二元
钙钛矿,通常为单相,产率高(90%)。通过 X 射线粉末衍射、扫描电子显微镜(
SEM)、能量色散 X 射线分析(EDXA)和红外光谱对产品进行了表征。