Liquid injection field desorption/ionization of reactive transition metal complexes
Liquid injection field desorption/ionization of reactive transition metal complexes
复制标题
DOI：
10.1007/s00216-006-0524-0
复制
发表时间：
2006-09-01
影响因子：
4.3
通讯作者：
Hofmann, Peter
中科院分区：
文献类型：
--
作者：
Gross, Juergen H.;Nieth, Norbert;Hofmann, Peter
液体注射场解吸/电离（LIFDI）已被应用于鉴定过渡金属配合物，是高度反应性的空气和水分的质谱。镍和铑的络合物作为在甲苯、四氢呋喃或乙腈中的稀溶液（~ 0.2mg ml（-1））提供，并且在惰性条件下通过LIFDI装置特有的注射毛细管施加到离子源的真空内部的场解吸发射体上。LIFDI质谱的双聚焦磁扇区仪器提供的光谱表现出强烈的分子离子峰的物种调查或信号，可以很容易地与目标化合物通过假设中性损失的最弱的结合配体。最终，还检测到合成的副产物或由不完全反应或某种程度的分解产生的其他组分。
Liquid injection field desorption/ionization (LIFDI) has been applied to identify transition metal complexes that are highly reactive to air and moisture by mass spectrometry. The complexes of nickel and rhodium were supplied as dilute solutions (-0.2 mg ml(-1)) in toluene, tetrahydrofuran or acetonitrile, and were applied onto the field desorption emitter inside the vacuum of the ion source under inert conditions by means of the injection capillary unique to the LIFDI set-up. LIFDI mass spectrometry on a double-focusing magnetic sector instrument provided spectra exhibiting intense molecular ion peaks for the species investigated or signals that could easily be related to the target compound by assuming neutral loss of the weakest-bound ligand. Eventually, byproducts of the synthesis or other components resulting from incomplete reactions or some degree of decomposition were also detected.