Transients from a mixture of [(R(O)Sn)2C(CH3)2]2 and (RCl2Sn)2C(CH3)2 [R = (SiMe3)2CH]: an identification in situ by 1D 119Sn and 2D 1H119Sn HMQC NMR spectroscopy and electrospray mass spectrometry

Biesemans, Monique; Duthie, Andrew; Jurkschat, Klaus; Verbruggen, Ingrid; Zobel, Bernhard

doi:10.1002/aoc.443

Cited by 2 publications

(2 citation statements)

References 89 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The established methods used for the structure elucidation of organotin(IV) compounds are nuclear magnetic resonance (NMR) based on 1 H, 13 C and 119 Sn chemical shifts and 119 Sn Mo¨ssbauer spectroscopy. [14][15][16][17][18][19][20][21] On the other hand, electrospray ionization (ESI) is one of the softest ionization techniques and makes possible to determine the molecular weight of many organometallic 22,23 and metal complex compounds. 24 Most studies were performed on simple organotin compounds 25 and many papers oriented mainly on the synthetic aspects only claim that the structures or MWs are confirmed by ESI-MS without further reasoning.…”

Section: Introductionmentioning

confidence: 99%

Potentiometric, 1H NMR and ESI-MS investigation on dimethyltin(iv) cation–mercaptocarboxylate interaction in aqueous solution

et al. 2009

View full text Add to dashboard Cite

The interaction between dimethyltin(IV) cation with three different mercaptocarboxylic acids (thiolactic, 3-mercaptopropanoic and thiomalic acids) was studied in aqueous solution by potentiometry, 1 H NMR spectroscopy and electrospray (ESI) mass spectrometry. The speciation model and equilibrium data were determined on the basis of potentiometric evidences, as well as the bonding sites by means of ESI mass spectrometry and the geometry of the species by 1 H NMR spectroscopy. The speciation profiles show the formation of different complex species, whose stabilities and formation percentages, in particular for the mononuclear mixed species, are high in a wide pH range. ESI mass spectrometry studies together with 1 H NMR investigations fully confirm the speciation model. The former also allows to propose a cyclic structure with O-Sn and S-Sn coordination, confirmed by MS/MS analysis; the latter indicates angles mostly matching with a Tbp arrangement around the metal.

show abstract

Section: Introductionmentioning

confidence: 99%

Potentiometric, 1H NMR and ESI-MS investigation on dimethyltin(iv) cation–mercaptocarboxylate interaction in aqueous solution

et al. 2009

View full text Add to dashboard Cite

show abstract

“…For these reasons, a reliable, fast and inexpensive analytical technique is needed for the structure characterization and also for the monitoring the reaction pathways 7–9. Several spectral techniques are available for this purpose10–14 and one of the established methods used for the structure elucidation of organotin(IV) compounds is nuclear magnetic resonance (NMR) based on 1 H, 13 C and 119 Sn chemical shifts 15–18. On the other hand, a powerful technique such as X‐ray crystallography is the method of choice19–21 for the ultimate structure characterization, but it requires a single crystal which is difficult to obtain.…”

Section: Introductionmentioning

confidence: 99%

Electrospray ionization‐multistage tandem mass spectrometry of complex multitin organometallic compounds

et al. 2007

View full text Add to dashboard Cite

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.

show abstract

Transients from a mixture of [(R(O)Sn)₂C(CH₃)₂]₂ and (RCl₂Sn)₂C(CH₃)₂ [R = (SiMe₃)₂CH]: an identification in situ by 1D ¹¹⁹Sn and 2D ¹H¹¹⁹Sn HMQC NMR spectroscopy and electrospray mass spectrometry

Abstract: Compound C is proposed to be in equilibrium with an ionic species C , the cation of which has an adamantane-type structure.

Cited by 2 publications

References 89 publications

Potentiometric, 1H NMR and ESI-MS investigation on dimethyltin(iv) cation–mercaptocarboxylate interaction in aqueous solution

Potentiometric, 1H NMR and ESI-MS investigation on dimethyltin(iv) cation–mercaptocarboxylate interaction in aqueous solution

Electrospray ionization‐multistage tandem mass spectrometry of complex multitin organometallic compounds

Contact Info

Product

Resources

About