摘要
利用Ｘ射线光电子能谱（ＸＰＳ）、质谱（ＭＳ）方法分别研究了１５种四卤合金属酸十八铵化合物。通过ＸＰＳ讨论了这些化合物的金属、卤素、氮原子的核心结合能的化学位移。根据Ｐａｕｌｉｎｇ电负性讨论了这些数据和计算电荷的关系。讨论了配位体Ｘ（Ｃｌ、Ｂｒ、Ｉ）、中心离子Ｍ（Ｚｎ、Ｃｏ、Ｃｕ、Ｍｎ、Ｃｄ）和质子化十八胺Ｃ１８Ｈ３７ＮＨ＋３的关系。通过ＭＳ讨论了在电子轰击、化学电离条件下，四碘合钴酸十八铵、四氯合钴酸十八铵加热分解产生的Ｃ１８Ｈ３７ＮＨ＋３（ｍ／ｚ２７０）离子碰撞诱导解离谱（ＣＩＤＭＳ）。通过低碰撞能量范围（０～１０ｅＶ），多次碰撞条件下观察到的远电荷碎裂反应。
The X ray photoelectron spectroscopic (XPS) and mass spectrometric (MS) spectra of fifteen octadecylammonium tetrahalogenometallates are reported.The chemical shifts of the binding energy of metals M(Zn,Co,Cu,Mn,Cd),halogens X(Cl,Br,I) and nitrogen N in the compounds have been studied by XPS.The interactions between the central atoms M(Zn,Co,Cu,Mn,Cd),the ligands X(Cl,Br,I) and the octadecylammonium ions are discussed according to Pauling’s electronegativity scale.The collision induced dissociation mass spectrometric (CIDMS) spectra of the dissociation product C 18 H 37 NH + 3 (m/z=270) from octadecylammonium tetraiodocobaltate (C 18 H 37 NH 3) 2CoI 4 and octadecylammonium tetrachlorocobaltate (C 18 H 37 NH 3) 2CoCl 4 were studied. Judging from the observed remote site charge fragmentation process under the low collision energy (0～10 eV) and multiple collision conditions,these ions have higher internal energy than those derived directly from the protonation of octadecylamine.
出处
《分析测试学报》
CAS
CSCD
1997年第1期10-16,共7页
Journal of Instrumental Analysis
关键词
质谱
四卤合金属酸
XPS
CIDMS
X ray photoelectron spectroscopy,Mass spectrassopy,Octadecylammonium tetrahalogenomelallates.
