Acetonyl Complexes

The acetonyl complex turned out to be the most stable, which is apparently due to the absence of hydrogen atoms in a 3-position of the alkane chain [30b,c]. Indeed, the tr-ethyl derivative readily decomposes to produce a w-ethylene complex of Pt(II) in addition to the product of the reaction with Cl and water. It... 

The cationic methylplatinum(ii) complex with acetone and cod ligands, [PtMe(acetone)(cod)]" , is obtained as a solution from the reaction of AgPp6 with PtClMe(cod) in acetone (Scheme 14). The acetone ligand is substituted easily by a hydroxo anion to give the corresponding neutral hydroxo complex 99. The basic hydroxo ligand of the complex deprotonates acetone to form the methylplatinum(ii) acetonyl complex 100. The cationic complex stabilized by pyridine 101 may be isolated as an analytically pure solid. 

CpW(CO)(CH=CHCMe=6)L.The acetonyl complex CpW(CO)3CHaCOMe reacts with MeNHa in an unusual reaction to give CpW(CO)2(NH2Me)-CONHMe, which contains a labile amine ligand readily replaceable by other... 

Wiegand, G., ef al. Crysfal strucfure analysis and molecular model of a complex of cifrafe synthase with oxaloacetate and S-acetonyl-coenzyme A. 

It should be noted that complexes of types VII-5 or VII-7 can be easily prepared by the method initially described in [30a-d], The chloride complex Pt"Cl4 - reacts at room temperature in aqueous solution with alkyl iodide to produce a o-alkyl complex of platinum(IV). Methyl [30a], ethyl [30b,c], and acetonyl [30d] complexes of Pt(IV) have been prepared by this method. An interesting feature of the reaction is that the sixth coordination site in the octahedral molecule of the product is occupied by water, while the T ion is bound to another molecule of the platinum(II) complex (Ptlj and analogous products are formed and precipitate) ... 

The fluxional molecule forms the salt (Me3P=N-PMc3)+ X with halogen halide, and with diethyl zinc a complex (7.483a), which is analogous to zinc acetonyl acetonate (7.483b). 

Scheme 18 The Use of a 3-Bromo-2-methoxypropene Derived Complex for the Introduction of the Acetonyl Functionality by Coupling with lodobenzeneb ...

The accidental removal of an Af-acetonyl substituent during silica gel chromatography has been observed for complex 15 giving complex 16 with a protic NHC ligand (Scheme 9.6a) [23a], This type of accidental removal of an N-wingtip substituent has also been described for complexes bearing Af-silyl-substituted NHCs [23b]. 

The cyclopalladation of 2-[(dimethylamino)aininomethyl]-substituted naphthalenes was investigated.Van Koten et al. found for 2-[(dimethylamino)aminomethyl]naphthalene that direct palladation occurred selectively at the 3-position versus the 1-position. This was confirmed by the crystal structure of 47. Acetonyl bridged palladium(ii) complexes such as... 

Acetonylplatinum(ii) complexes PtX(GH20GH3)(bipy) (X = G1, GH2GOGH3) 74 have been prepared by the base-promoted hydrolysis of PtGl2(bipy) in the presence of acetone. Terpy and PPh3 ligands form complexes with acetonyl and imidomethyl ligands 75 and 76, respectively. 

A phenyl(acetonyl)platinum complex with cod as a ligand 368 is obtained from the reaction of PtlPh(cod) with acetone in the presence of Ag20 (Equation (92)). The accompanying formation of diphenyl and diacetonyl complexes 369 and 370 is ascribed to disproportionation of 368 during the reaction. ... 

Direct aerial oxidation of cobalt(ii) in the presence of acetone, acetonitrile, and malononitrile has been used for the first time in the porphjrrin series to generate organocobalt(m) porphyrin derivatives. The acetonyl species [Co-(TPP)CHaCOCH3] was characterized by an JlT-ray crystal structure and found to have (Co—C)=2.028 A. The complexes are stable in solution and apparently fairly stable to light. A further novel alkylation of prophyrins involves electro-... 

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