Perchlorate Ion Complexes

Non-innocent ground state electronic structure of a polynuclear copper complex with picolinate bridges

“…Figure 9). Splitting of the broad bands at 1090 cm -1 and 1022 cm -1 indicates the presence of inner and outer-sphere perchlorates [26]. From a detailed study on the IR spectra of pyridinium salts and ions, the 3434 cm -1 region was assigned to the NH vibrations that are found in 2 with protonated pyridyl arms.…”

Synthesis and spectral studies on Co (II), Ni(II) and Cu(II) complexes with 1,2- bis(N-methylbenzimidazolyl)benzene

“…The perchlorate complexes, in addition to the heterocycle peaks, showed additonal peaks due to the perchlorate group. The complex [Co(OClO 3 ) 2 (L) 1 13 The spectral features are characteristic of coordination of one of the perchlorate groups to Cu(II), the other being outside the coordination sphere. 5 The far-IR spectra of the chloro complexes displayed peaks due to terminal  M-Cl and  M-N (M = Co, Ni or Cu) around 315 and 278 cm -1 respectively.…”

Synthesis and Characterisation of Palladium(II) Complexes with 1,2-bis(N-methylbenzimidazolyl)Benzene

“…13 The [Pd(cotl)(N-N)] ClO 4 complex exhibited bands at 1098 and 628 cm -1 due to ionic perchlorate group. 22 The far-IR spectra of the parent complexes [PdX(cotl)] 2 displayed bands at 270 and 157 cm -1 for n(Pd-Cl-Pd) and n(Pd-Br-Pd) respectively. 21 The products, [Pd 2 Cl 2 (cotl)(N-N)]Cl and [{PdBr(cotl)} 2 (N-N)] displayed peaks corresponding to bridged palladium-chloride stretches at 274 cm -1 and terminal palladiumbromide stretches at 179 cm -1 indicated the former has not undergone chlorobridge cleavage and latter has undergone bromobridge cleavage.…”