The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 8-Hydroxyquinoline 1-oxide(SMILESS: OC1=CC=CC2=CC=C[N+]([O-])=C12,cas:1127-45-3) is researched.SDS of cas: 57825-30-6. The article 《Lanthanide and actinide complexes with bidentate ligands. Crystal structure of dimethylformamidetetrakis(1-oxo-2-thiopyridinato)thorium(IV)》 in relation to this compound, is published in Congr. Naz. Chim. Inorg., [Atti], 16th. Let’s take a look at the latest research on this compound (cas:1127-45-3).
UO2L2L’.xL’ (HL = 2-hydroxypyridine-N-oxide, 2-mercaptopyridine-N-oxide (I), 8-hydroxyquinoline-N-oxide, L’ = H2O, MeOH, Ph3PO, DMSO, Me2NAc, DMF, x = 0, 1), ThL4.xL1, ThL4L1.xL1, LaL3.xL1, and Li[LaL4].xL1 were prepared Crystals of ThL4(DMF) (HL = I), are orthorhombic, space group P212121, with a 10.514(6), b 11.024(7), c 24.56(1) Å, and d.(calculated) = 1.88 g cm-3 for Z = 4. The final conventional R was 0.056 based on the 2354 observed reflections. Four bidentate ligands and 1 DMF are bonded to Th to form a distorted monocapped square antiprismatic coordination polyhedron. The Th-S distances are 2.94-2.99 Å (mean 2.97 Å). The Th-O bond distance of 2.52 Å to DMF is significantly longer than the 4 Th-O(pyOS) bond distances (mean 2.40 Å).
Compounds in my other articles are similar to this one(8-Hydroxyquinoline 1-oxide)COA of Formula: C9H7NO2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.
Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider