Organometallic Compounds

Coates, G. E.; Green, M. L. H.; Wade, Kenneth

doi:10.1007/978-94-011-6893-9

Cited by 118 publications

(35 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The function Zw(IFoI-IFcI) 2 showed no major trends as a function of IFol, (sine)/X, sequence number, parity or identity of crystallographic indices. The weighting scheme is therefore acceptable.…”

Section: Introductionmentioning

confidence: 85%

“…However, the potential of this reaction sequence has not been realized because small molecules, typically dimers but occasionally trimers, are the usual products. 2 A variety of factors, including steric effects, valency angle strain and reaction mechanism, have been used to accoun for the nature of a specific 2 product.…”

Section: Introductionmentioning

confidence: 99%

“…The kinetics of the elimination reaction 3 between dimethylalane (CH 3 ) 2 AlH and N-methylaniline N(CH 3 )(C 6 H 5 )H have been investigated and a mechanism has been proposed to explain all experimental observations. cis isomer trans isomer I.…”

Section: Introductionmentioning

confidence: 99%

“…3 ' 4 Thus, [(CH 3 ) 2 AIN(CH 3 )(C 6 Hs) 2 exists as an 83%/17% mixture of cis/trans isomers in benzene, toluene or methylene chloride solutions. There are two significant features of the proposed reaction mechanism which were used to explain all experimental observations.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nature of the dimethylaluminum, -gallium, and -indium methylphenylamide dimers in solution and the molecular structure of [(CH3)2InN(CH3)(C6H5)]2

Beachley¹,

Bueno²,

Hallock³

et al. 1981

Inorg. Chem.

View full text Add to dashboard Cite

The solution properties of [(CH3)2MN(CH3) (C6H5)] 2 ( = Al, Ga, In) and the crystalline state of the indium derivative have been investigated. All compounds exist in solution as mixtures of cis and trans geometrical isomers. The cis isomer is the predominant species for the aluminum and gallium compounds, whereas the trans isomer is more abundant in the case of indium. An X-ray structural study of the indium derivative identified the trans isomer in the solid state. The complex [(CH3)2InN(CH3)(C6H5)]2 crystallizes in the centrosymmetric triclinic space group PI (No. 2) with a = 7.3202 (15) A, b = 7.6095 (21) A, c = 8.9800 (27) A, a = 83.194 (24)°, ß = 81.800 (21)°, y = 81.986 (19)°, V= 487.8 (2) A3, and p(calcd) = 1.71 g cm-3 for Z = 1 (dimeric unit) with molecular weight 502.1. Diffraction data were collected with a Syntex P2i automated four-circle diffractometer, and the structure was solved by using Patterson, Fourier, and full-matrix, least-squares refinement techniques. The resulting discrepancy indices were RF = 2.7% and RvF = 3.3% for all 2259 reflections with 2 = 3.0-55.0°( Mo Ka radiation). The dimeric molecule lies on a crystallographic center of symmetry. The In-N (bridging) distances are In-N(l) = 2.280 (2) A and In-N(l') = 2.284 (2) A, the ••• ' distance is 3.363 A, and the indium-methyl bond lengths are defined by In-C(l) = 2.156 (4) A and In-C(2) = 2.149 (4) A. The dimerization and/or isomerization reactions in solution were investigated by NMR spectroscopy by evaluating the effects of solvent and temperature on the cis/trans isomer ratios. All data are consistent with the hypotheses that the aluminum-nitrogen dimer is formed by a concerted x-cycloaddition reaction, but the gallium and indium dimers are formed by a series of metal-nitrogen bond forming reactions. The influence of these proposed dimerization reactions on the potential for polymer formation are discussed.

show abstract

Section: Introductionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nature of the dimethylaluminum, -gallium, and -indium methylphenylamide dimers in solution and the molecular structure of [(CH3)2InN(CH3)(C6H5)]2

Beachley¹,

Bueno²,

Hallock³

et al. 1981

Inorg. Chem.

View full text Add to dashboard Cite

show abstract

“…Other ele ments of Group IVb have a tendency toward catenation, and organic derivatives of polygermanes and polystannanes of chain lengths up to nine are known (12)(13)(14)(15). The tendency toward catenation decreases in going from silicon to lead, and no organic lead compounds are known with more than two lead atoms bound together in a chain (7).…”

Section: Historical Polysilanesmentioning

confidence: 99%