Application of 1663-45-2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 1,2-Bis(diphenylphosphino)ethane, is researched, Molecular C26H24P2, CAS is 1663-45-2, about Novel base-free dianion complexes of Pt(II) and Pd(II) derived from heterocyclic thiourea and tertiary phosphine ligands. Author is Faihan, Ahmed S.; Al-Jibori, Subhi A.; Al-Janabi, Ahmed S..
Treatment of one molar equivalent of [M(HCPPT)2] (M = Pd, Pt; H2CPPT = 1-(5-chloropyridin-2-yl)-3-phenylthiourea) with one molar equivalent of κ2-diphos (diphos = dppe, dppp, dppb, and dppf) or two molar equivalent of κ1-phos afforded eight heterocyclic thiourea dianion complexes (1-8). The spectroscopic data anal. showed clear AX splitting pattern, which indicates that the two coordinated phosphorus atoms are non-equivalent Meaning that, the metal’s center is attached to both S,N donor atoms in a chelating fashion. In addition, the splitting system show a good resemblance to the previously synthesized thiourea dianion complexes. Furthermore, the reaction is believed to undergo a square planar substitution mechanism at which five coordinate intermediate is formed. Generally, the reported complexes (1-8) are believed to resemble their analogs thiourea dianion complexes at which a four membered ring structure is formed with Pt(II) or Pd(II) being centered, adopting a square planar geometry. Four of the synthesized complexes (1-4) were tested against Salmonella typhimurium and Bacillus subtilis bacteria at which complexes 4 and 2 showed highest activity values.
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Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis