Iridium(III) hydrido amino acid compounds: Chiral complexes and a helical extended lattice

Hydrido(prolinato-κ2N,O)tris(trimethylphosphane-κP)iridium(III) hexafluoridophosphate

“…Finally, restricting the search to iridium compounds, there are 6 CSD structures with proline coordinated to iridium. We reported on the crystal structure of [hydrido-valinato-tris(trimethylphosphine)iridium][hexafluorophosphate] (CSD:20060907) (Roy et al, 2006) in the space group P4 3 , which has very strong intermolecular N-H•••O hydrogen bonding that results in a 4 3 helical arrangement of the iridium complexes. In this report, the title proline complex has a "flatter" intermolecular motif with the N-H•••O hydrogen bonding resulting in a one-dimenional chain motif with the chain parallel to the c-axis.…”

“…For the valine structure analogous to the proline structure described herein, see: Roy et al (2006). For a Cp*Ir complex with proline and a t-butylethynl ligand, see: Carmona et al (2000).…”

Self-Assembly Motifs of Water in Crystals of Palladium β-Amino Acid Complexes Influenced by Methyl Substitution on the Amino Acid Backbone

“…It is not surprising that the hydrogen-bonding (H-bonding) capabilities of amino acids play a large role in the solid-state structures of the their metal complexes. In an iridium valine complex on which we reported, H-bonding sets up a unique helical arrangement of molecules that extends along a 4 3 screw axis of the space group P4 3 , with L-Valine and D-Valine generating crystals with opposite helical turns in P4 1 [4,5].…”

“…Many research teams [1][2][3] including ours [4][5][6][7] have been studying the metal complexes of amino acids, to examine both their catalytic activity as well as their biological activity. Perhaps one of the most influential investigators in this area is Wolfgang Beck whose series "Metal Complexes of Biologically Important Ligands" contains over 175 publications in a research career spanning over 50 years [1].…”

New Chlorido(dimethyl sulfoxide)iridium(III) Complexes with N6‐Substituted Adenines – Kinetic N(7) versus Thermodynamic N(9) Coordinated Adenine Isomers

“…[5,6] Furthermore, although several organometallic Ir III compounds with ligands of biological interest have been described, [7][8][9][10] few studies of non-organometallic Ir III complexes have been reported. [11][12][13][14][15] On the other hand, Ru III pleted by the N 6 -substituted adenine molecule.…”