Metal formyl and hydroxymethyl metal compounds

Ring-slippage chemistry of transition metal cyclopentadienyl and indenyl complexes

“…Compound 75 was characterized by X-ray crystallography; the closest distance between anion and cation is 3. 65 A between a carbon of the CBHB anion and a carbon of a PMe3 ligand. When solid 75 was heated in THF, it slowly dissolved to re-form the i75-C5H5 complex 55. In addition to 75, the reaction of 55 and PMe3 gave a 1/1 R'…”

Low-valent Organorhenium Compounds

“…The reduction of coordinated CO by hydride reagents was intensively studied in the late 1970s and early 1980s as part of efforts directed at understanding the metal- 192 The step wise reduction of the CO ligand in [Re(NO)(CO)(L)(Cp)] + has been examined by a molecular orbital analysis which suggests the initial site of hydride attack is at the nitrosyl ligand, followed by rearrangement to a formyl complex. 194 Substitution of the r|-Cp ligand by the pure a-donor 1,4,7-triazocyclononane ligand has been used to stabilize more highly charged analogues of [Re(CO)(L)(NO)(Cp)] + .…”

“…The key photochemical step appears to be dissociation of the 410 In the solid-state structure of the disulfide complex, the S-S bond distance of 0.199 6(5) nm is between that for single and double bonds. The CO stretching absorptions in the IR spectrum appear at 2014(s) cm and 1945(s) cm" 1 , indicating that S 2 is a better acceptor ligand than CO. 411 The pentamethylcyclopentadienyl analogue (191) is prepared in 47% yield and undergoes 3-chloroperbenzoic acid oxidation to (192) in 50% yield. Further oxidation generates (193) which was not isolated in pure form.…”

Methanol and methyl fuel catalysts. Final technical report, September 1980-August 1983

“…A variety of formyl complexes have been synthesized [45][46][47][48][49][50][51][52][53][54] In general, amines are known to react with aldehydes and ketones to produce alkyl substituted amines and water [57]: (11) where R=H or alkyl. The reaction is a typical nucleophilic addition of the electron-rich (base) nitrogen of the amine attacking the electron-deficient (acid) carbonyl carbon of the aldehyde or ketone.…”