Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Safety of (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine). In my other articles, you can also check out more blogs about 161265-03-8
Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 161265-03-8, Name is (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine), Safety of (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine).
Palladium(0)-tetracyanoethylene complexes of diphosphines and a dipyridine with large bite angles, and their crystal structures
Complexes of Pd(tcne) (tcne = tetracyanoethylene) containing bidentate ligands with large bite angles, bis<2-(diphenylphosphino)phenyl> ether (L1), 4,6-bis(diphenylphosphino)-10,10-dimethyl-10H-dibenzo<1,4>oxasiline (L2), 4,5-bis(diphenylphosphino)-2,8-dimethylphenoxathiine (L3), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (L4) and trans-5,6-bis(2-pyridyl)bicyclo<2.2.1>hept-2-ene (L6), were prepared and characterised.The compound 4,6-bis(diphenylphosphino)dibenzofuran (L5) did not form chelating palladium complexes, owing to its large natural bite angle of 138 degree.The crystal structures of L6, *2.5CH2Cl2 1, *4CH2Cl2 2, *2CH2Cl2 4 and 5 have been determined.The similarity of electronic effects induced by the free diphosphines was demonstrated by MOPAC calculations.The geometries of the ligands, however, were most accurately predicted by molecular mechanics (MM2) calculations for the diphosphines, and MNDO for L6.The largest P-Pd-P angle in the zerovalent palladium complexes was found to be 104.6 degree.A further increase in the natural bite angle of the ligand results in elongation of the Pd-P bond length in the complex rather than enlargement of the P-Pd-P bite angle.The ligand L6 assumed a bite angle of 99.5(2) degree in complex 5, which is considerably smaller than its calculated value of 117 degree.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Safety of (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine). In my other articles, you can also check out more blogs about 161265-03-8
Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate