Syntheses of Pd(ii)/Pt(ii) complexes with non-chelating 4-pyridylselenolate ligand ranging from mononuclear to macrocyclic structures and their utility as catalysts in Suzuki C–C coupling reaction

K. V. Vivekananda, S. Dey, A. Wadawale, N. Bhuvanesh, V. K. Jain
2013 Dalton Transactions  
Supporting Information General Procedures: Solvents were dried and distilled prior to use by standard methods. All reactions were carried out in Schlenk flasks under a nitrogen atmosphere. 4-Bromopyridine, 1-(4-pyridyl)-pyridinium chloride hydrochloride, silver triflate, sodium borohydride were used as purchased from commercial sources without further purification. The complexes cis-[MCl 2 (PR 3 ) 2 ], cis-[MCl 2 (P  P)], [M 2 Cl 2 (µ-Cl) 2 (PR 3 ) 2 ] (M = Pd, Pt; PR 3 = PEt 3 , PMe 2 Ph, PPh
more » ... t 3 , PMe 2 Ph, PPh 3; P  P = dppm, dppe, dppp) s1-3 and cis-[Pt(PEt 3 ) 2 (OTf) 2 ] s4 (OTf = CF 3 SO 3  ) were prepared according the literature methods. Melting points were determined in capillary tubes and are uncorrected. Elemental analysis for C, H, N and S were carried out on an Carlo-Erba EA-1110 CHNS Analyser. Absorption spectra were recorded on a JASCO aaaaaV-630 spectrophotometer. Infrared spectra were recorded with a JASCO FTIR-6100 spectrometer. Mass spectra were recorded on a Waters Q-TOF micro (YA-105) time of flight mass spectrometer. 1 H, 13 C{ 1 H}, 31 P{ 1 H}, 77 Se{ 1 H} and 195 Pt{ 1 H} NMR spectra were recorded on a Bruker Avance II-300 NMR spectrometers operating at 300, 75.47, 121.5, 57.25, 64.29 MHz, respectively. Chemical shifts are relative to internal chloroform peak (δ 7.26 1 H and Electronic Supplementary Material (ESI) for Dalton Transactions This journal is
doi:10.1039/c3dt51510a pmid:23942808 fatcat:lfsahyhkzvbpfas7swg5juwzji