Polyphosphorus ligands—V. The synthesis, phosphorus-31 NMR spectra and conformations of the polykis(diphenylphosphino) benzens (Ph2P)nC6H6−n (n = 1–4)☆
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2021, PolyhedronCitation Excerpt :Water (50 mL) was added to the residue, the resultant white precipitate was separated by filtration, washed with water (2 × 50 mL) and methanol (2 × 5 mL), and dried under reduced pressure to give 2.79 g (97%) of 1,2-bis(diphenylphosphinyl)benzene as a white powder, mp 184–185 °C (lit. mp 183–185 °C [16,33]). 1H NMR (400.13 MHz, CDCl3) δ: 7.40–7.32 (m, 2H, H-4,5), 7.30–7.20 (m, 20H, P-C6H5), 7.12–7.08 (m, 2H, H-3,6).
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2021, PolyhedronCitation Excerpt :First described in 1988 by McFarlane and coworkers [1], 1,2,4,5-tetrakis(diphenylphosphino)benzene (tpbz) is a remarkably robust ligand that is easily accessible in gram quantities from inexpensive, commercial precursors in a single step.
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2010, Journal of Organometallic ChemistryPolydentate phosphines
2009, Journal of Organometallic Chemistry
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For Part IV see ref. 1.
Copyright © 1988 Published by Elsevier Ltd.