The Crystal and Molecular Structure of Chloro-α,β,γ,δ-tetraphenylporphinatocobalt(III)

Abstract

The structure of the title compound, C44H28N4CoCl, has been determined by single-crystal X-ray diffraction. The crystals are body-centered tetragonal, with a=b=13.693(2), c=9.701(2) Å, and Z=2. The space group was determined to be I4 from the measurement of the anomalous dispersion effect. The structure was predicted prior to the X-ray analysis from the calculation of the intermolecular van der Waals energy; the result agreed quite well with the experimentally determined structure. A tetragonal pyramidal five coordination with the chlorine atom at the apex was found for the cobalt atom. The cobalt-chlorine distance is 2.149 (6) Å, about 0.1 Å shorter than those found in ordinary octahedral coordinations.

The Cobalt Porphyrin−Lewis Base System: A Highly Selective Catalyst for Alternating Copolymerization of CO2 and Epoxide under Mild Conditions

“…27 After the suspension of (TPP)Co (1.49 mmol, 1.0 g) in methanol (1 L) containing concentrated hydrochloric acid (10 mL) was stirred at room temperature in a flask open to the air for several Synthesis of Bromocobalt Tetraphenylporphyrin-Pyridine Complex ((TPP)CoBr‚‚‚Py). 26 The reaction of (TPP)Co (0.07 mmol, 59 mg) with HBr (48% in water, 0.75 mL) in pyridine (15 mL) was conducted at 30°C overnight.…”

Metal porphyrin/phenyltrimethylammonium tribromide: High efficient catalysts for coupling reaction of CO2 and epoxides

“…The solution was stirred at room temperature for 4 h. The solvent and unreacted glacial acetic acid were removed under reduced pressure to leave a reddish-brown solid that was used to the oxirane-CO 2 reaction as catalyst. Co III (TPP)Cl and Co III (TPP)Br were prepared according to the literature methods [38,39].…”

Quaternary onium tribromide catalyzed cyclic carbonate synthesis from carbon dioxide and epoxides

“…To optimize the effect of framework of SalenCo(OAc), several SalenCo(OAc) complexes with different backbone/or different substituted groups were synthesized [33,34], characterized, and used to the coupling reaction of PO and CO 2 ( Table 5). The catalysts containing ethylene backbone with different substituted groups have various catalytic activities (entries 1, 2, 5, 6): the catalyst 1k with electron withdrawing group has lower Scheme 2.…”