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直接激光气化磷酸盐形成团簇的质谱研究
Mass Spectrometric Study of Clusters Produced by Laser Vaporization of Some Phosphates *
【摘要】 用飞行时间质谱仪对激光气化KH2PO4和Cu3(PO4)2样品形成的团簇进行了质谱研究。它们都主要形成了含有磷氧四面体价键结构的团簇。形成的[K(KPO3)n〗+团簇系列具有明显的幻数,它们是n=3,6,9,12,15。这表明它们可能采取了环形三聚体的堆垛结构。[Cu(CuPO3)n]+可能采取了偏磷酸盐链式多聚体的结构。
【Abstract】 The clusters generated by direct laser vaporization of KH 2PO 4 and Cu 3(PO 4) 2 samples are studied by a TPF mass spectrometer.It is found that mainly the K(KPO 3) n + cluster series is generated from KH 2PO 4 sample and it demonstrates obvious magic numbers,which are n=3,6,9,12,15.Shch magic numbers strongly suggest the structure of packed potassium metaphosphate trimers.Direct laser vaporization of Cu 3(PO 4) 2 sample produced Cu(CuPO 3) n + cluster series as well as other series with the same building block of (CuPO 3).It is inferred that cupric phosphate cluster ions probably have chained structures.
【Key words】 Cluster\ Direct laser vaporization\ Mass spectrometry\ Phosphate;
- 【文献出处】 化学物理学报 ,CHINESE JOURNAL OF CHEMICAL PHYSICS , 编辑部邮箱 ,1998年03期
- 【分类号】O657.6,O613.62
- 【下载频次】28