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 *

作　　者：刘向红[1] 张晓光[1] 李钥 王秀岩[1] 楼南泉[1] 

机构地区：[1]中国科学院大连化学物理研究所分子反应动力学国家重点实验室

出　　处：《Chinese Journal of Chemical Physics》1998年第3期215-220,共6页化学物理学报（英文）

基　　金：国家自然科学基金

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。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.

关 键 词：团簇 激光气化 质谱 磷酸盐 磷酸二氢钾 磷酸铜 

分 类 号：O614.113[理学—无机化学] O614.121[理学—化学]