Titanium imido complexes with tetraaza macrocyclic ligands

Cycloaddition reactions of titanium and zirconium imido, oxo and hydrazido complexes supported by tetraaza macrocyclic ligands ‡

“…As part of an ongoing research program in early transition metal imido chemistry, 1-7 we have been exploring the chemistry of tetraaza macrocycle-supported complexes. 8- 12 We were especially attracted by the dibenzotetraaza [14]annulene systems Me n taa {n = 4 (5,14-dihydro-6,8,15,17-tetramethyldibenzo[b,i]- [1,4,8,11]tetraazacyclotetradecine) or 8 (5,14-dihydro-2,3,6,8, 11,12,15,17-octamethyldibenzo[b,i] [1,4,8,11]tetraazacyclotetradecine); see below}, the coordination chemistry of which has been reviewed. 13,14 These macrocycles are related to the porphyrins but differ in several important respects.…”

Metathesis of a UV imido complex: a route to a terminal UV sulfide

“… 16 The formation of a U V terminal oxo complex from the reaction of a U V imido complex with CO 2 has been reported, 8 a but a similar strategy using CS 2 has never been used to prepare terminal uranium sulfides. Hydrosulfidolysis of imido compounds also represents a successful route to terminal or bridging sulfide complexes of d-block transition metals, 17 but it has never been applied for f-elements.…”

The Progression of Synthetic Strategies to Assemble Titanium Complexes Bearing the Terminal Imide Group

“…[3] Mountford and co-workers have commonly applied this strategy to assemble terminal aryl imide compounds of titanium. [16,17,21,[81][82][83][84] Likewise, Odom and co-workers have also used this tactic to prepare silyl imides. [85] However, this approach to incorporate the imide group relies on having an already assembled, highly donating (e.g., tBu), imido ligands.…”