Electronic properties of new homobimetallic anthracene-bridged η5-cyclopentadienyl derivatives of iridium(I) and of the corresponding cation radicals [L2Ir{C5H4CH2(9,10-anthrylene)CH2C5H4}IrL2]+

Synthesis and reactivity of homo-bimetallic Rh and Ir complexes containing a N,O-donor Schiff base

“…311 nm to the intra-ligand p-p * transitions. It further suggested that the low energy transitions are localized at metal centre with the differences in absorptions attributed to electronic interaction between two metal centres [22]. The electronic spectra of monometallic complex 3 displayed absorptions at 463, 338, 262 nm and 5 at 415, 345 and 268 nm (Fig.…”

“…Furthermore, methyl protons of C 5 Me 5 ring are intramolecularly involved in long range C-HÁÁÁp interactions with the phenalato ring. In complex 1, the methyl carbon C13 approaches to C1-C2 bond of the phenalato ring with a contact distance of 2.776 Å (HÁÁÁp 2.776 Å, CÁÁÁp 3.523 Å, C-HÁÁÁp 135.23°), whereas in complex 2 the methyl carbon located at the same position as in complex 1 is involved in a long range interaction with C1-C6 bond of the phenalato ring (HÁÁÁp 3.030 Å, CÁÁÁp 3.503 Å, C-HÁÁÁp 111.86°) [22,23]. Further, crystal structures of 3 and 5 revealed the presence of extensive inter-molecular C-HÁÁÁX (X = F and p) interactions.…”

“…Further, crystal structures of 3 and 5 revealed the presence of extensive inter-molecular C-HÁÁÁX (X = F and p) interactions. It is well established that these types of interactions plays an important role in the construction of huge supramolecular architectures [22,23]. In complex 3, C-HÁÁÁF (C33-H33ÁÁÁF5; 2.599 Å and C4-H4ÁÁÁF3; 2.538 Å), one C-HÁÁÁC-H (C21-H21ÁÁÁC6-H6, 2.397 Å) and FÁÁÁC (C4ÁÁÁF3, 3.140 Å) types of interactions are present.…”

Vancomycin-Iridium (III) Interaction: An Unexplored Route for Enantioselective Imine Reduction

“…The coordination of Van to the iridium metal center was then confirmed by the bathochromic shift of the metal-to-ligand charge transfer transition (MLCT) band [35] in the UV spectra (Ɛ λ436nm = 6 × 10 3 M −1 cm −1 ) [36,37]. Interestingly, the addition of [IrCp*Cl 2 ] 2 to a Van solution caused a shift of the maximum absorbance from 417 nm for [IrCp*Cl 2 ] 2 alone to 429 nm for the [Ir(Cp*)(Van)Cl] complex [38,39] (see SI, Figure S2). Circular dichroism (CD) experiments on free vancomycin and on the Ir/Van 1:1 complex further confirmed that the complexation between the chiral macromolecule and the metal was effective.…”