Jirásko Robert, Holcapek Michal, Kolárová Lenka, Basu Baul Tushar S
Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, nám. Cs. legií 565, 53210 Pardubice, Czech Republic.
J Mass Spectrom. 2007 Jul;42(7):918-28. doi: 10.1002/jms.1229.
The series of 14 complex organotin(IV) compounds containing many tin atoms and noncovalent bonds in the structure was characterized by electrospray ionization multistage tandem mass spectrometry (ESI-MS(n)). The mass spectra were measured in both polarity modes to obtain complementary structural information. The characteristic pattern of ten natural tin isotopes allowed the determination of the number of tin atoms in the molecular adducts and fragment ions by comparing theoretical and experimental isotopic distributions. Positive ion ESI spectra show unusual adduct formation depending on the type of organic solvent used for the direct infusion analysis owing to the ion-molecule reactions in the ion source. On the basis of the detailed spectral interpretation of organotin(IV) compounds, the fragmentation patterns of multitin organometallic compounds have been proposed. Noncovalent bonds in polymeric complexes are fragmented first, which is then followed by characteristic neutral losses in monomeric units.
通过电喷雾电离多级串联质谱（ESI-MS(n)）对一系列14种结构中含有多个锡原子和非共价键的复杂有机锡（IV）化合物进行了表征。在两种极性模式下测量质谱，以获得互补的结构信息。十种天然锡同位素的特征模式使得通过比较理论和实验同位素分布来确定分子加合物和碎片离子中的锡原子数。由于离子源中的离子-分子反应，正离子ESI谱显示出取决于用于直接进样分析的有机溶剂类型的异常加合物形成。基于对有机锡（IV）化合物的详细光谱解释，提出了多锡有机金属化合物的裂解模式。聚合物配合物中的非共价键首先断裂，随后是单体单元中的特征性中性损失。
