Furan-decorated neutral Re(I)-based 2D rectangle and 3D trigonal prism

Neutral, stable and luminescent metallacycles decorated with furan units, a 2D rectangle with four furans and a 3D trigonal prism with six furans, were synthesized from readily accessible starting materials through a fac- Re(CO)3-directed approach

4,4′-Bipyridine–3-(thio­phen-3-yl)acrylic acid (1/2)

In the title 1/2 adduct, C10H8N2·2C7H6O2S, the dihedral angle between the pyridine rings is 18.41 (11)°. In the thio­phene­acrylic acid mol­ecules, the dihedral angles between the respective thio­phene and acrylic acid units are 5.52 (17)° and 23.92 (9)°. In the crystal, the components are linked via O—H⋯N hydrogen-bonding inter­actions, forming units of two 3-thio­phene­acrylic acid mol­ecules and one 4,4′-bipyridine mol­ecule

Synthesis and Crystal Structure of the Rhenium(I) Tricarbonyl Complex of 5,10,15,20-Tetra‑<i>p</i>‑tolyl-21,23-dithiaporphyrin

The hexacoordinated rhenium­(I) complex of 5,10,15,20-tetra-<i>p</i>-tolyl-21,23-dithiaporphyrin was synthesized, and the crystal structure analysis revealed the unusual binding mode of rhenium­(I) to two thiophene sulfur atoms and one of the pyrrole nitrogen atoms of the porphyrin macrocycle

Iridium(III) Complexes Bearing Tridentate Chromophoric Chelate: Phosphorescence Fine-Tuned by Phosphine and Hydride Ancillary

Functional 2-pyrazolyl-6-phenylpyridine chelatesnamely, (pzpyph^Bu)­H₂ and (pzpyph^CF₃)­H₂ and phosphinesare successfully employed in the preparation of emissive Ir­(III) metal complexes, for which the reaction with phosphine such as PPh₃, PPh₂Me, and PPh₂(CH₂Ph) afford corresponding Ir­(III) complexes [Ir­(pzpyph^Bu)­(PPh₃)₂H] (<b>1a</b>), [Ir­(pzpyph^CF₃)­(PPh₂R)₂H] (<b>2a</b>–<b>2c</b>), R = Ph, Me, CH₂Ph, which also show an equatorial coordinated hydride. In contrast, treatment with 1,2-bis­(diphenylphosphino)­benzene (dppb) and 1,2-bis­(diphenylphosphino)­ethane (dppe) yields the isomeric products [Ir­(pzpyph^Bu)­(dppb)­H] (<b>3a</b>) and [Ir­(pzpyph^Bu)­(dppe)­H] (<b>3b</b>), for which the distinctive, axial hydride undergoes rapid chlorination, forming chlorinated complexes [Ir­(pzpyph^Bu)­(dppb)­Cl] (<b>4a</b>) and [Ir­(pzpyph^Bu)­(dppe)­Cl] (<b>4b</b>), respectively. On the other hand, upon extensive heating of <b>2c</b>, one of its coordinated PPh₂(CH₂Ph) exhibits benzyl cyclometalation and hydride elimination to afford [Ir­(pzpyph^CF₃)­(PPh₂R)­(PPh₂R′)] (<b>5c</b> and <b>6c</b>) R = CH₂Ph and R′ = CH₂(<i>o</i>-C₆H₄) as the kinetic and thermodynamic products, respectively. Their structural, photophysical, and electrochemical properties are examined and further affirmed by the computational approaches