26334-87-2Relevant articles and documents
Construction of Novel Cyclic Tetrads by Axial Coordination of Thiaporphyrins to Tin(IV) Porphyrin
Alka,Pareek, Yogita,Shetti, Vijayendra S.,Rajeswara Rao,Theophall, Gregory G.,Lee, Way-Zen,Lakshmi,Ravikanth
, p. 13913 - 13929 (2017)
We report the formation of new cyclic porphyrin tetrads 1 and 2, which were obtained from the reaction between dihydroxytin(IV) porphyrin and cis-dihydroxy-21-thiaporphyrin/21,23-dithiaporphyrin. The unique oxophilicity of tin(IV) porphyrin was the drivin
A simple alternative method for preparing Sn(IV) porphyrins
Shetti, Vijayendra S.,Ravikanth, Mangalampalli
experimental part, p. 361 - 370 (2010/11/21)
Sn(IV) porphyrins are highly desirable for various applications because of their stability, their preference for oxygen-donor ligands and because they possess properties which can be easily characterized using various spectroscopic techniques. The most established method for the preparation of the Sn(IV) porphyrins is refluxing the porphyrin with SnCl 2·2H 2O in pyridine as solvent. Although this method works efficiently, we found that the work-up results in a lot of unwanted materials and using large quantities of pyridine as solvent is not good under laboratory conditions. In this paper, we show that the Sn(IV) porphyrins can be prepared easily by treating porphyrin with SnCl 2·2H 2O in chloroform, di chloromethane and toluene as solvent containing 25-50% ethanol as co-solvent. The reaction works smoothly and involves simple work-up and straightforward chromatographic purification. The method works efficiently for meso and β-substituted porphyrins. The spectral and electrochemical properties of various Sn(IV) were studied and our studies showed that the properties are sensitive to the nature of substituent present at the meso-position. Copyright
Reaction of Tin Porphyrins with Vicinal Diols
Du, Guodong,Ellern, Arkady,Woo, L. Keith
, p. 2379 - 2386 (2008/10/09)
Reactions of tin porphyrins with vicinal diols were investigated. Treatment of (TTP)Sn(C≡CPh)2 or (TTP)Sn(NHtolyl)2 with pinacol and 2,3-diphenylbutane-2,3-diol afforded diolato complexes (TTP)Sn[OC(Me)2C(Me)2O]
Tin(II) porphyrins: Synthesis and spectroscopic properties of a series of divalent tin porphyrins. X-ray crystal structure of (2,3,7,8,12,13,17,18-octaethylporphinato)tin(II)
Barbe,Ratti,Richard,Lecomte,Gerardin,Guilard
, p. 4126 - 4130 (2008/10/08)
A series of tin(II) porphyrins (P)Sn, where P is the dianion of octaethylporphyrin (OEP), tetraphenylporphyrin (TPP), tetra-p-tolylporphyrin (TpTP), tetra-m-tolylporphyrin (TmTP), and tetramesitylporphyrin (TMP), were synthesized and characterized by IR, UV-visible, 1H NMR, and 119Sn M?ssbauer spectroscopy. The crystal structure of (OEP)Sn(II), monomeric in the solid state (orthorhombic, Pnma; a = 9.489 (1), b = 15.171 (2), c = 22.373 (2) ?; Z = 4; R(F) = 0.031, RW(F) = 0.036), shows that the central metal lies 1.018 ? from the mean nitrogen plane. Comparison of M?ssbauer and X-ray data of compounds of this type with those of (P)SnFe(CO)4 derivatives shows a formal +II oxidation state for the porphyrin metal.
Effect of Axially Bound Anions on the Electroreduction of Tin(IV) Porphyrins in Tetrahydrofuran
Kadish, Karl M.,Xu, Quan Yun Y.,Maiya, G, Bhaskar,Barbe, Jean-Michel,Guilard, Roger
, p. 1531 - 1536 (2007/10/02)
The spectroscopic characterization and electrochemistry of SnL(X)2 is presented where L is the dianion of tetra-p-tolylporphyrin or tetra-m-tolylporphyrin and X is CIO4-, Br-, Cl-, F-, or OH-.In all cases, electroreduction leads to porphyrin ? anion radicals and dianions which were characterized in tetrahydrofuran by spectroelectrochemistry and e.s.r. spectroscopy.Dissociation of one CIO4- ion from SnL(CIO4)2 occurs before electroreduction of the complex but no dissociation is observed either before or after electroreduction of SnL(F)2 or SnL(OH)2.In contrast, one Br- ion dissociates after the first electron addition to SnL(Br)2 while one Cl- ion dissociates from SnCl(Cl)2 after the second electroreduction of this complex.
