Jan Reedijk

TL;DR: The complex is a first generation structural model for [Fe]-only hydrogenases; it incorporates both a sulfur-rich environment and coordinated carbon monoxide ligands, as observed in [NiFe]-hydrogenases.

Abstract: The synthesis and characterization of a mononuclear iron(III) complex [Fe(Hphpz)Cl(CH3OH)] (1) and a tetranuclear assembly of a bis(μ-hydroxo)-bridged dinuclear iron(III) complex [{Fe(Hphpz)2(OH)}2][Fe(Hphpz)3]2 (2) with the ligand 3(5)-methyl-5(3)-(2-hydroxyphenyl)pyrazole (H2phpz) is reported. Compound 1 is converted into 2 in a methanol solution and in the presence of a base. The asymmetric unit of 2 consists of two independent [Fe(Hphpz)3] molecules and one dinuclear complex [Fe(Hphpz)2(OH)]2 containing two crystallographically non-equivalent iron(III) ions; the three units are linked by N−H···O and O−H···O hydrogen bonding and stacking interactions to form a cluster with an approximate C2-symmetry. The Mossbauer spectra of [{Fe(Hphpz)2(OH)}2][Fe(phpz)3]2 have been measured at 295 and 78 K and indicate the presence of four crystallographically distinct, but chemically similar iron(III) sites. The magnetic properties of this compound originate from the weak antiferromagnetic interaction between the FeIII ions of the [Fe(phpz)2(OH)]2 dimer (J = −2.8 cm−1). (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)

TL;DR: In this article, three mixed-donor crown ethers, [15]aneNO 2 S 2, [12]aneNOS 2 and [15]-aneN 2 O 2 S, have been coupled to the oxirane and thiirane-containing copolymers of glycol dimethacrylate p (GMA-O) and p (gMA-S) by nucleophilic ring-opening reactions of the epoxy and thIirane groups.

TL;DR: In this article, a mixed-metal compound (Cu2Pb(SCN)3L3) has been prepared from zerovalent copper and lead thiocyanate in an acetonitrile solution of 2-dimethylaminoethanol (HL).

TL;DR: In this article, three dinuclear Cu(II) compounds with the ligand 7-azaindole (abbreviated as Haza) and bridging end-on azide anions with the general formula [Cu2(Haza)4(N3)2(A)2] were reported.