385815-89-4Relevant academic research and scientific papers
Substituent effects on aurophilicity and π-π interaction in crystals of arylphosphine-Au(I) derivatives. Synthesis and X-ray structural studies of compounds (CX3C6H4)3P-Au-X and {(CF3)2C6H3}3P-Au-X
Nunokawa, Keiko,Onaka, Satoru,Tatematsu, Tsutomu,Ito, Mitsuhiro,Sakai, Jyun
, p. 56 - 64 (2001)
Substituent effects on aurophilic interactions have been explored by single-crystal X-ray diffraction methods for a series of Au(I) complexes of monodentate phosphines, R′3P-Au-X (X = Cl, Sph, and Spy). When a CF3 substituent is introduced at a meta position of the phenyl ring in (C6H5)3P, aurophilicity has been accrued in ClAuP(m-CF3C6H4)3. However, aurophilicity has been weakened by introducing two CF3 groups at both meta positions. When a CF3 substituent is substituted for a H atom in the para position or when a CH3 substituent is introduced in the meta and/or para positions, such an effect has not been observed for R′3PAuCl and R′3PAuSph. Most dimers constructed by aurophilicity appear to be reinforced by π-π interactions between the phenyl ring of the Sph ligand or the pyridine ring of the Spy ligand and one of the phenyl rings in the R′3P ligand. A novel ladder-like supra molecular architecture is created in the crystal of {3,5-(F3C)2C6H3}3 PAuSph, and a tetramer is formed in the crystal of (C6H5)3PAuSpy by aurophilic and π-π interactions. Substituent effects on important bond lengths have been discussed.
PdCl[PPh2CH2CH2CH-(cyclic)CH2CH2PPh2] as a precursor to homo- and hetero-metallic species directed by ESMS (electrospray ionisation mass spectrometry)
Neo, Kian Eang,Neo, Yew Chin,Chien, Sheau Wei,Tan, Geok Kheng,Wilkins, Alistair L.,et al.
, (2008/10/09)
The cyclometallated Pd compound PdCl[PPh2CH2CH2CH-(cyclic)CH2CH2PPh2]1, obtained from PdCl2(Ph2P(CH2)5PPh2) in refluxing DMF (N,N-dimethylformamide), was characterized by NMR and X-ray single-crystal diffraction analysis. The cyclometallation of MCl2(Ph2P(CH2)5PPh2) (M = Pd, Pt) to give 1 and its Pt(II) analogue was probed using electrospray ionisation mass spectrometry (ESMS). The reactivity of 1 towards neutral ligands such asphosphines and pyridines as well as basic metal complexes such as pyrid ine-thiolate compounds of Au(I), Hg(II) and Pt(II) in solution was also investigated. The results showed that the chloride trans to the Pd-C bond is susceptible to ligand replacement. A number of entry metalloligandswas examined in an attempt to establish a route to cyclometallated aggr egates and clusters.
