(Cryptand-222)potassium(+) (hydrogensulfido)[5,10,15,20-tetra-kis(2-pival-amido-phen-yl)porphyrinato]ferrate(II)

Hydrosulfide complexes of the transition elements: diverse roles in bioinorganic, cluster, coordination, and organometallic chemistry

Molecules containing transition metal hydrosulfide linkages are diverse, spanning a variety of elements, coordination environments, and redox states, and carrying out multiple roles across several fields of chemistry.

Transfer of hydrosulfide from thiols to iron(ii): a convenient synthetic route to nonheme diiron(ii)–hydrosulfide complexes

The synthesis and reactivity of an unprecedented nonheme diiron(ii)–hydrosulfide complex via Fe(ii) mediated C–S bond cleavage of thiols.

Spectroscopic investigation of the reaction of metallo-protoporphyrins with hydrogen sulfide

Hydrogen sulfide (H₂S) is the most recently discovered gasotransmitter molecule joining nitric oxide and carbon monoxide. In addition to being biologically important gases, these gasotransmitters also provide distinct modes of reactivity with biomimetic metal complexes. The majority of previous investigations on the reactivity of H₂S with bioinorganic models have focused on Fe-based porphyrin systems, whereas investigations with other metals remains underinvestigated. To address this gap, we report here an examination of the reactions of H₂S, HS^-, and S₈ with Mg^II, Cu^II, Co^II, Zn^II, Cr^II, Sn^IV, and Mn^II/III protoporphyrins.

Spectroscopic investigations into the binding of hydrogen sulfide to synthetic picket-fence porphyrins

The picket-fence porphyrin system is used a model for a sterically-constrained, protected binding environment to study H₂S and HS⁻ligation.

Di-aqua-[5,10,15,20-tetra-kis-(4-chloro-phen-yl)porphyrinato-κ(4) N]iron(III) tri-fluoro-methane-sulfonate-4-hy-droxy-3-meth-oxy-benzaldehyde-water (1/1/2)

In the title compound, [Fe(C44H24Cl4N4)(H2O)2](SO3CF3)·C8H8O3·2H2O, the Fe(III) cation is chelated by the four N atoms of the deprotonated tetra-kis-(4-chloro-tetra-phen-yl)porphyrin (TClPP) and further coordinated by two water mol-ecules in a distorted octa-hedral geometry. In the crystal, the cations, anions, 4-hy-droxy-3-meth-oxy-benzaldehyde and water mol-ecules of crystallization are linked by classical O-H⋯O hydrogen bonds and weak C-H⋯O and C-H⋯Cl hydrogen bonds into a three-dimensional supra-molecular architecture. The crystal packing is further stabilized by weak C-H⋯π inter-actions involving pyrrole and benzene rings. π-π stacking between parallel benzene rings of adjacent 4-hy-droxy-3-meth-oxy-benzaldehyde mol-ecules is also observed, the centroid-centroid distance being 3.8003 (13) Å. The three F atoms of the anion are disordered over two sets of sites, with a refined occupancy ratio 0.527 (12):0.473 (12). The O atom of one water mol-ecule of crystallization is also disordered over two positions in an occupancy ratio of 0.68 (5):0.32 (5).