Hailu, Hillete published the artcileVariable denticity of a multidentate terthiophene derivative towards Ni(II) and Zn(II) – structural studies, Synthetic Route of 52431-30-8, the publication is Bulletin of the Chemical Society of Ethiopia (2011), 25(2), 221-231, database is CAplus.
A multidentate ligand, 3,4-bis(2-iminomethylphenol)-2,2′:5,2″-terthiophene (L), was synthesized by the condensation of 3,4-diamino-2,2′:5,2″-terthiophene and salicylaldehyde. The ligand and Ni(II) and Zn(II) complexes were synthesized and characterized by IR, NMR, UV-visible, AAS, MS, molar conductivity and magnetic susceptibility measurements. The ligand behaves as neutral ONS-ONS bis-chelant towards Ni(II) in [Ni2LCl4(H2O)2]ยท4H2O and as dibasic ONNO donor towards Zn(II) in [ZnL(NH3)2]. The dinuclear Ni(II) complex exhibits subnormal magnetic moment at room temperature due to metal-metal interaction through extended conjugation. The participation of the ring sulfur in bonding towards Ni(II) and the non-participation of the same towards Zn(II) are notable features. Octahedral geometries are proposed for both complexes. Cyclic voltammetric studies revealed electrochem. polymerization of the free ligand (L) but not of the Ni(II) and Zn(II) complexes.
Bulletin of the Chemical Society of Ethiopia published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C4Br2N2O4S, Synthetic Route of 52431-30-8.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary