Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn¡¯t involve a screen. 13991-08-7, C30H24P2. A document type is Article, introducing its new discovery., HPLC of Formula: C30H24P2
Taking TiF4 complexes to extremes – The first examples with phosphine co-ligands
The first soft donor adducts of TiF4, [TiF 4(diphosphine)] (diphosphine = o-C6H4(PMe 2)2, R2P(CH2)2PR 2, R = Me or Et) have been prepared from [TiF4(MeCN) 2] and the diphosphines in rigorously anhydrous CH2Cl 2, as extremely moisture sensitive yellow solids, and characterised by multinuclear NMR (1H, 31P, 19F), IR and UV/vis spectroscopy. The crystal structure of [TiF4{Et 2P(CH2)2PEt2}] has been determined and shows a distorted six-coordinate geometry with disparate Ti-F transF and Ti-FtransP distances and long Ti-P bonds. Weaker soft donor ligands including Ph3P, Ph2P(CH 2)2PPh2, o-C6H4(PPh 2)2, Ph2As(CH2)2AsPh 2, o-C6H4(AsMe2)2 and iPrS(CH2)2SiPr do not form stable complexes with TiF4, although surprisingly, fluorotitanate(IV) salts of the previously unknown doubly protonated ligand cations [LH 2][Ti4F18] (L = o-C6H 4(PPh2)2, o-C6H 4(AsMe2)2 and iPrS(CH 2)2SiPr) are formed in some cases as minor by-products. The structure of [o-C6H4(PPh 2H)2][Ti4F18] shows the first authenticated example of a diprotonated o-phenylene-diphosphine. The synthesis and full spectroscopic characterisation are reported for a range of TiF 4 adducts with hard N- or O-donor ligands for comparison purposes, along with crystal structures of [TiF4(thf)2], [TiF 4(Ph3EO)2]¡¤2CH2Cl 2 (E = P or As), and [TiF4(bipy)]. The Royal Society of Chemistry 2010.
Interested yet? Keep reading other articles of 13991-08-7!, HPLC of Formula: C30H24P2
Reference£º
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