Distorted octahedral environments in tricarbonylrhenium(I) complexes of 5-[2-(2,4,6-trimethylphenyl)diazen-1-yl]quinolin-8-olate and 5,7-bis[2-(2-methylphenyl)diazen-1-yl]quinolin-8-olate

Abstract

The Re(I) centres of two Re(I)-tricarbonyl complexes, viz. tricarbonyl(pyridine-κN){5-[2-(2,4,6-trimethylphenyl)diazen-1-yl]quinolin-8-olato-κ(2)N(1),O}rhenium(I), [Re(C23H21N4O)(CO)3], (I), and {5,7-bis[2-(2-methylphenyl)diazen-1-yl]quinolin-8-olato-κ(2)N(1),O}tricarbonyl(pyridine-κN)rhenium(I), [Re(C28H23N6O)(CO)3], (II), are facially surrounded by three carbonyl ligands, a pyridine ligand and either a 5-[2-(2,4,6-trimethylphenyl)diazen-1-yl]quinolin-8-olate [in (I)] or a 5,7-bis[2-(2-methylphenyl)diazen-1-yl]quinolin-8-olate [in (II)] ligand, in a slightly distorted octahedral environment. The crystal structure of (I) is stabilized by two intermolecular C-H···O interactions and that of (II) is stabilized by three intermolecular C-H···O hydrogen-bonding interactions.

Crystal structure of fac-hexacarbonylbisμ2-(3-carboxy-3′-carboxylato-2,2′-bipyridine)-κ3 N,N′:O-dirhenium(I) tetrahydrate, C30H22N4O18Re2

“…Overall, the bond distances and bond angles around the two rhenium cores are similar to related structures and ligand systems ( [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]). When viewed along the a axis, the rhenium(I) units pack in a head-to-head fashion in column-like structures along the c axis with a slight angle to the neighbouring two units.…”

Crystal structure of 3,5,7-tris(morpholinomethyl)tropolone·0.67 hydrate, C22H33N3O5·0.67H2O

“…These hydrogen interactions seems to enhance the solid state ordering of the structure with the molecules packing in alternating layers when viewed along the ab-plane. These tropolone type ligand systems and other O,O′, N,O and N,N′ bidentate ligand systems form part of an ongoing study [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34].…”