RESUMO
In the title mol-ecular salt, (C12H14N2)[CoCl4], the dihedral angle between the pyridine rings of the cation is 52.46â (9)° and the N-C-C-N torsion angle is -128.78â (14)°, indicating that the ring nitro-gen atoms are in anti-clinal conformation. The Cl-Co-Cl bond angles in the anion span the range 105.46â (3)-117.91â (2)°. In the extended structure, the cations and anions are linked by cation-to-anion N-Hâ¯Cl and C-Hâ¯Cl inter-actions, facilitating the formation of R 4 4(18) and R 4 4(20) ring motifs. Furthermore, the crystal structure features weak anion-to-cation Clâ¯π inter-actions [Clâ¯π = 3.4891â (12) and 3.5465â (12)â Å]. Hirshfeld two-dimensional fingerprint plots revealed that the most significant inter-actions are Clâ¯H/Hâ¯Cl (45.5%), Hâ¯H (29.0%), Clâ¯C/Câ¯Cl (7.8%), Clâ¯N/Nâ¯Cl (3.5%), Clâ¯Cl (1.4) and Coâ¯H (1%) contacts.
RESUMO
In the title compound, C19H15NO, the dihedral angle between the benzene rings of the carbazole moiety is 1.73â (12)° and the meth-oxy-substituted phenyl ring deviates from the mean plane of the carbazole grouping (r.m.s. deviation = 0.020â Å) by 56.78â (8)°. In the crystal, weak C-Hâ¯π inter-actions link the mol-ecules. The two-dimensional fingerprint plots derived from the Hirshfeld surface indicate that Hâ¯H (51.2%) and Câ¯H/Hâ¯C (39.9%) contacts dominate the packing.
RESUMO
In the title compound, C12H9ClN2O, the dihedral angle between the aromatic rings is 1.78â (4)° and an intra-molecular O-Hâ¯N hydrogen bond closes an S(6) ring. In the crystal, C-Hâ¯O and C-Hâ¯N hydrogen bonds connect the mol-ecules into [001] chains.
RESUMO
In the title compound, C21H20BrNO4S, a key inter-mediate in the synthesis of the widely used ß-lactamase inhibitor tazobactam, the five-membered thia-zolidine ring adopts an envelope conformation and the four-membered azetidine ring is in a distorted planar conformation. The crystal structure features C-Hâ¯O hydrogen bonds and a weak C-Hâ¯π inter-action.