Investigation of some organotin compounds and their complexes by IR spectroscopy

Morozov, Oleg S.; Vyshinskii, N. N.; Rudnevskii, N. K.

doi:10.1007/bf00615799

Cited by 7 publications

(7 citation statements)

References 6 publications

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“…In addition, they showed the presence of SO 2 asym and SO 2 sym that appeared in the 1304-1307 cm -1 and 1179-1188 cm -1 regions, respectively. The absorption bands corresponding to Sn-O and Sn-N appeared in the 533-552 cm -1 and 439-454 cm -1 regions respectively, which is consistent with the literature [47,48]. The FTIR spectra of the ligand and complexes 1-3 are shown in Figures S1-S4.…”

Section: Characterization Of Complexes 1-3supporting

confidence: 88%

Tin Complexes of 4-(Benzylideneamino)benzenesulfonamide: Synthesis, Structure Elucidation and Their Efficiency as PVC Photostabilizers

et al. 2021

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Poly(vinyl chloride) (PVC) suffers from photo-xidation and photodegradation when exposed to harsh conditions. Application of PVC thus relies on the development of ever more efficient photostabilizers. The current research reports the synthesis of new complexes of tin and their assessment as poly(vinyl chloride) photostabilizers. The three new complexes were obtained in high yields from reaction of 4-(benzylideneamino)benzenesulfonamide and tin chlorides. Their structures were elucidated using different tools. The complexes were mixed with poly(vinyl chloride) at a very low concentration and thin films were made from the blends. The effectiveness of the tin complexes as photostabilizers has been established using a variety of methods. The new tin complexes led to a decrease in weight loss, formation of small residues, molecular weight depression, and surface alteration of poly(vinyl chloride) after irradiation. The additives act by absorption of ultraviolet light, removal the active chlorine produced through a dehydrochlorination process, decomposition of peroxides, and coordination with the polymeric chains. The triphenyltin complex showed the greatest stabilizing effect against PVC photodegradation as a result of its high aromaticity.

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Section: Characterization Of Complexes 1-3supporting

confidence: 88%

Tin Complexes of 4-(Benzylideneamino)benzenesulfonamide: Synthesis, Structure Elucidation and Their Efficiency as PVC Photostabilizers

et al. 2021

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“…New bands corresponding to the stretching vibrations of the Sn-C (515-518 cm −1 ) and Sn-O (455-518 cm −1 ) were seen in the IR spectra of 1-4. The assignments of these peaks were consistent with those reported for related compounds [39,40]. No shift was seen in the symmetric and asymmetric vibrations of the SO2 group in complexes 1-4 compared with those for the ligand.…”

Section: Ir Spectroscopy Of Tin-naphthalene Sulfonic Acid Complexes 1-4supporting

confidence: 87%

Tin-Naphthalene Sulfonic Acid Complexes as Photostabilizers for Poly(vinyl chloride)

et al. 2021

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Poly(vinyl chloride) degrades when exposed to ultraviolet light for long durations; therefore, the photostability of polymeric materials should be enhanced through the application of additives. New organotin complexes containing 4-aminonaphthalene-1-sulfonic acid were synthesized and their role as poly(vinyl chloride) photostabilizers were evaluated. The reaction of 4-amino-3-hydroxynaphthalene-1-sulfonic acid and appropriate di- or trisubstituted tin chloride (triphenyltin chloride, tributyltin chloride, dibutyltin dichloride, and dimethyltin dichloride) in methanol under reflux gave the corresponding tin-naphthalene complexes with yields of 75%–95%. Elemental analyses and spectroscopic techniques including infrared and nuclear magnetic resonance (proton and tin) were used to confirm their structures. The tin complexes were added to poly(vinyl chloride) to produce thin films that irradiated with ultraviolet light. Various parameters were assessed, such as the weight loss, formation of specific functional groups, changes in the surface due to photoirradiation, and rate constant of photodegradation, to test the role played by the organotin complexes to reduce photodegradation in polymeric films. The results proved that organotin complexes acted as photostabilizers in these circumstances. The weight loss, formation of fragments containing specific functional groups, and undesirable changes in the surface of polymeric films were limited in the presence of organotin complexes. Organotin complexes containing three phenyl groups showed the most desirable stabilization effect. These act as efficient primary and secondary photostabilizers, and as decomposers for peroxides. In addition, such an additive inhibits the dehydrochlorination process, which is the main cause of poly(vinyl chloride) photodegradation.

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“…No base was used in the synthesis of complexes 1-4 which agrees with previously reported procedures [33−35]. The FTIR spectra of 1-4 exhibited absorption bands resulting from the formation of Sn-C (536-540 cm -1 ), Sn-O (466-474 cm -1 ), and Sn-N (424-447 cm -1 ) bonds which agree with those reported for organotin compounds [35,36]. Furthermore, they exhibited absorption bands for the aromatic and aliphatic N-H bonds at 3340-3410 and 3201-3294 cm -1 , respectively.…”

Section: Synthesis Of Tin Complexes 1-4supporting

confidence: 87%

Synthesis of Carvedilol–Organotin Complexes and Their Effects on Reducing Photodegradation of Poly(Vinyl Chloride)

et al. 2021

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Poly(vinyl chloride) (PVC) undergoes photodegradation induced by ultraviolet (UV) irradiation; therefore, for outdoor applications, its photostability should be enhanced through the use of additives. Several carvedilol tin complexes were synthesized, characterized and mixed with PVC to produce thin films. These films were irradiated at 25 °C with a UV light (λ = 313 nm) for up to 300 h. The reduction in weight and changes in chemical structure and surface morphology of the PVC films were monitored. The films containing synthesized complexes showed less undesirable changes than the pure PVC film. Organotin with a high content of aromatics was particularly efficient in inhibiting photodegradation of PVC. The carvedilol tin complexes both absorbed UV light and scavenged radicals, hydrochloride, and peroxides and, therefore, photostabilized PVC.

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Investigation of some organotin compounds and their complexes by IR spectroscopy

Cited by 7 publications

References 6 publications

Tin Complexes of 4-(Benzylideneamino)benzenesulfonamide: Synthesis, Structure Elucidation and Their Efficiency as PVC Photostabilizers

Tin Complexes of 4-(Benzylideneamino)benzenesulfonamide: Synthesis, Structure Elucidation and Their Efficiency as PVC Photostabilizers

Tin-Naphthalene Sulfonic Acid Complexes as Photostabilizers for Poly(vinyl chloride)

Synthesis of Carvedilol–Organotin Complexes and Their Effects on Reducing Photodegradation of Poly(Vinyl Chloride)

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