Crystal structure of di-μ-isobutyrato-κ4O:O′-bis[cis-dichlorido(dimethyl sulfoxide-κS)rhenium(III)]

The title compound, [Re2(C3H7COO)2Cl4{(CH3)2SO}2], comprises binuclear complex molecules [Re—Re = 2.24502 (13) Å] involving cis-oriented double carboxylate bridges, four equatorial chloride ions and two weakly bonded O atoms from dimethyl sulfoxide ligands in the axial positions at the ReIII atoms. In the crystal, molecules are linked into corrugated layers parallel to (101) by very weak C—H...Cl and C—H...O hydrogen-bonding interactions. C—H...Cl hydrogen bonding provides the links between layers to consolidate a three-dimensional framework

Crystal structure of fac-aquatricarbonyl[(S)-valinato-κ2N,O]rhenium(I)

In the molecule of the title compound, [Re(C5H10NO2)(CO)3(H2O)], the ReI atom adopts a distorted octahedral coordination sphere defined by one aqua and three carbonyl ligands as well as one amino N and one carboxylate O atom of the chelating valinate anion. The carbonyl ligands are arranged in a fac-configuration around the ReI ion. In the crystal, an intricate hydrogen-bonding system under participation of two O—H, two N—H and one C—H donor groups and the carboxylate and carbonyl O atoms as acceptor groups contribute to the formation of a three-dimensional supramolecular network

Crystal structure of bromido-fac-tricarbonyl[5-(3,4,5-trimethoxyphenyl)-3-(pyridin-2-yl)-1H-1,2,4-triazole-κ2N2,N3]rhenium(I) methanol monosolvate

In the title compound, [ReBr(C16H16N4O3)(CO)3]·CH3OH, the ReI atom adopts a distorted octahedral coordination sphere with a facial arrangement of the three carbonyl ligands. Two N atoms of the chelating 5-(3,4,5-trimethoxyphenyl)-3-(pyridin-2-yl)-1H-1,2,4-triazole ligand and two carbonyl ligands define the equatorial plane of the complex, with the third carbonyl ligand and the bromide ligand in axial positions. Conventional hydrogen bonds including the methanol solvent molecules assemble the complex molecules through mutual N—H...O—H...Br links [N...O = 2.703 (3) Å and O...Br = 3.255 (2) Å] into centrosymmetric dimers, whereas weaker C—H...O and C—H...Br hydrogen bonds [C...O = 3.215 (3)–3.390 (4) Å and C...Br = 3.927 (3) Å] connect the dimers into double layers parallel to the (111) plane

Sequential insertion of three different organometallics into a versatile building block containing a PNA backbone

In the view of developing a synthetic route for the controlled insertion of distinct organometallic moieties into peptide nucleic acid (PNA) oligomers, a proof-of-principle study of the chemoselective insertion of three different organometallics into a building block containing both a PNA backbone and an alkyne side-chain is presented in this study