Micromass lct premier tof ms

All reactions were performed using standard Schleck techniques under a nitrogen atmosphere. All chemicals were purchased from commercial sources and are of analytical grade. THF and DCM were dried using PURE-SOLV solvent purification system, (Innovative Technology, Amesbury, MA, USA, now known as inert, inertcorp.com). [Ag(CH₃CN)₄]PF₆ [53 (link)] and NH₄[S₂P(4-C₆H₄OMe)(OR)] derivatives [54 (link),55 (link)] were prepared following literature procedures. NMR spectra were recorded on a Bruker AV-400 instrument (Billerica, MA, USA) operating at 400MHz. The ¹H and ³¹P-NMR spectra were recorded at 162 MHz. For the ¹H-NMR, the residual solvent proton was used as a reference (δ, ppm, CDCl₃, 7.26). For ³¹P-NMR, H₃PO₄ (85%) was used as an external reference. The melting point was determined on an Electrothermal 9100 melting point apparatus (Stone, UK) and was uncorrected. The electronic absorption spectra were recorded on a Shimadzu UV-3600 UV-VIS-NIR spectrophotometer (Kyoto, Japan) using quartz cuvettes with a path length of 1 cm in the 200–400 nm for UV and 400–900 nm visible regions. The emission spectra were recorded on Perkin Elmer LS 55 fluorescence spectrometer (Waltham, MA, USA). Electrospray ionization mass spectrum (ESI-MS) for cluster 1 was recorded on Waters Micromass LCT Premier TOF-MS (Milford, MA, USA).