Ni(II), Co(II), Cu(II), Zn(II) and Na(I) complexes of a hybrid ligand 4′-(4‴-benzo-15-crown-5)-methyloxy-2,2′:6′,2″-terpyridine

Abstract

Eleven complexes of a hybrid ligand 4'-(4'''-benzo-15-crown-5)-methyloxy-2,2':6',2''-terpyridine (L) were synthesized and characterised by elemental analysis, IR-spectroscopy and X-ray analysis. The crystal structures of seven complexes were determined either from single-crystal data ([NaNCS.L] (6)and [CuL2.NaNCS.Na(NCS)2]+.NCS-.CH3CN) (11) or from powder diffraction data ([CoL2]2+.2NCS- (5) and [ML2]2+.2PF6-.nEtOH.mH2O, M = Ni(II) (1), Co(II) (2), Cu(II) (3), Zn(II) (4)) and revealed good coordinating properties of the ligand L and structural diversity of the obtained compounds. In compounds 1-5, the pi-pi interactions between pyridine rings or between pyridine and benzene rings play an important role in association of the cations.

Structure and properties of Li@C 60 –PF 6 endofullerene complex

“…The ring C-C stretching vibrations of hydrocarbons occur in the spectral range from 1590-1430 cm -1[34,35].Some other modes of vibrations such as scissoring and rocking are found at lower wavenumbers, which agree well with their FT-IR values are also listed in theTable 1. The stretching vibrations associated with PF 6 are obtained at 869 and 863 cm -1 with maximum intensity in the spectrum.These values are also in accordance with the broad strong band in the region 950-800 cm -1 in various hexafluorophosphate complexes[36].The UV-vis spectrum of Li@C 60 −PF 6 complex is computed using TD-DFT//B3LYP/6-31G(d) method in o-dichlorobenzene solvent, and compared with experimental UV-spectrum reported by Okada et al [12] in Fig. 4.…”

Effective Bipyridine and Pyrazine‐Based Polysulfide Dissolution Resistant Complex Framework Material Systems for High Capacity Rechargeable Lithium–Sulfur Batteries

“…In addition to the common peaks, the Cu‐bpy‐CFM showed FTIR peaks at 1605.46, 1625.72, 1222.28, and 728.74 cm −1 corresponding to —C—O— stretching vibration, H—bonds involving —C—O— groups, symmetric stretching of —C—N—, and out‐of‐plane —C—H— deformations, respectively. On the other hand, the Cu‐pyz‐CFM exhibited peaks at 1105.13 and 589.50 cm −1 arising from the —C—O—stretching and —C—N—C— vibrations, respectively. The absence of any anomalous peaks in the FTIR spectra validates the chemical stability of the CFMs after sulfur infiltration.…”

Bis{4′-[(2,3,5,6,8,9,11,12-octahydro-1,4,7,10,13-benzopentaoxacyclopentadecin-15-yl)methoxy]-2,2′:6′,2′′-terpyridine}cadmium(II) bis(hexafluoridophosphate) trihydrate: a powder study

“…In continuation of our study of complexes with a hybrid ligand 4′-(4′′′-benzo-15-crown-5)-methyloxy-2,2′:6′,2′′terpyridine (L) (Tsivadze et al, 2008;Logacheva et al, 2009) we present here the title compound (I), which is isostructural with the analogue Co and Zn complexes (Logacheva et al, 2009).…”

“…For the crystal structures of related complexes with the 4 0 -(4 000benzo-15-crown-5)-methyloxy-2,2 0 :6 0 ,2 00 -terpyridine ligand, see: Tsivadze et al (2008); Logacheva et al (2009). For details of the indexing algorithm, see: Visser (1969).…”