Search

In this paper we reported on the spectroscopic, physicochemical and the catalytic properties of dichloride (5,10,15,20-tetraphenylporphyrinato)antimony(V) hexachloridoantimonate(V) [Sb(TPP)Cl2] SbCl6(2). Optical spectroscopy data showed a red-shift of both absorption bands; the Soret and the Q, which was observed of the antimony complex compared with that free base porphyrin H2TPP. The optical gap Eg-op was calculated using the Tauc plot method suggesting a semi-conductor product. The [Sb(TPP)]+ and the [Sb(TPP)Cl2]+ fragments were determined using the mass spectrometry. The fluorescence investigation showed a high fluorescence quantum yield with a lifetime of (2) compared to the free base porphyrin.32% of the calmagite solution was removed (C0 = 40 mg/L, pH = 6, mass = 3 mg) using (1). However, using the system (2)/H2O2 (C0 = 40 mg/L, pH = 6, t = 240 mins), the yield value of decolourisation was found to be 94% at equilibrium.

The design of metalloporphyrins has attracted the attention of scientists owing to their valuable properties. In this work, the synthesis of meso-tetraphenyl porphyrin H2TPP (I), meso-tetraphenylporphyrinato-chromium(III) complex [CrIII(TPP)Cl] (II), and bis(cyano) meso-tetraphenylporphyrinato-chromium(III) complex [K(2 2 2)] [CrIII(TPP)(CN)2] 2.(C7H6O2) (III) was described. The physicochemical properties of (ll)-(IIII) were investigated. X-ray molecular structure of (III) displayed that the crystal lattice of the six-coordinated chromium (III) coordination compound, was made by two-dimensional chain pairs parallel to the [0 1 0] direction sustained by C__H…Cg and Cg…Cg π inter and intra-molecular interactions. Hirshfeld surface analysis allowed us to understand the intermolecular contacts, where the fingerprint plot provided the information about the percentage contribution. UV–vis data showed a red-shift for the chromium complex and slightly blue-shift after coordination with cyano axial ligand. The Eg-op value suggested that (I)-(III) compounds are semi-conductor. The complex (II) efficiently and promptly degraded calmagite dye solution at a yield of 100% (calmagite = 40 mg/L, pH = 6, time = 10 min, catalyst dose = 3 mg, H2O2 dose = 4 mL/L, and T = 20 °C).