The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Preparation and properties of hydroxo(methyl)-1,2-bis(diphenylphosphino)ethaneplatinum(II). A trans-influence series including σ carbon donor ligands based on platinum-phosphorus coupling constants》. Authors are Appleton, T. G.; Bennett, M. A..The article about the compound:Diiodo(1,5-cyclooctadiene)platinum(II)cas:12266-72-7,SMILESS:I[Pt]I.C1=CCC/C=CCC/1).Formula: C8H12I2Pt. Through the article, more information about this compound (cas:12266-72-7) is conveyed.
Monomeric Pt(OH)(Me)(dppe) (I; dppe = 1,2-bis(diphenylphosphino)ethane) is obtained from PtCl(Me)(dppe) by treatment of the derived labile cation [Pt(MeOH)(Me)(dppe)]+ with aqueous methanolic NaOH. I undergoes anation with a variety of acids, including fairly weak acids such as Me2CO and MeCN, and provides a convenient route to unsym. bis(alkyls) of Pt(II), e.g., Pt(CH2COMe)(Me)(dppe) and Pt(CH2CN)(Me)(dppe). The values of JPtPtrans to X or L derived from the 31P{1H} NMR spectra of PtXR(dppe) (X = various anionic ligands and R = Me or 1-cyclohexenyl), [Pt(Me)L(dppe)]+ (L = various neutral ligands), and sundry other neutral complexes of the type PtXY(dppe), permit the establishment of a trans-influence series which includes OH- and a variety of σ C donors. The OH- has a trans influence comparable with those of typical S donors and higher than those of NO3- and CH3CO2-. The generally high trans influence of σ C donors is lowered by the presence of conjugated electron-withdrawing groups on the ligating C atom. Tricyanomethide, C(CN)3-, binds through N rather than C, and C-bonded triacetylmethyl, C(COCH3)3-, is only slightly higher than Cl- in the trans-influence series, whereas the trans influence of CF3- is high and only slightly less than that of CH3-. In contrast, the Pt-Cl bond length and stretching frequency data indicate the trans influence of CF3- to be considerably lower than that of CH3-. The discrepancy is thought to arise because of the JPtPvalues primarily reflect changes in hybridization, whereas the Pt-Cl bond parameters are also sensitive to electrostatic effects induced by the electroneg. F atoms.
After consulting a lot of data, we found that this compound(12266-72-7)Formula: C8H12I2Pt can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics