Organo-silicon and -tin complexes of osmium carbonyl

1969 ◽  
Vol 16 (3) ◽  
pp. P67-P68 ◽  
Author(s):  
S.A.R. Knox ◽  
C.M. Mitchell ◽  
F.G.A. Stone
Keyword(s):  
Tin Complexes ◽  
Osmium Carbonyl

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

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2434
Author(s):  
Hassan Ghani ◽  
Emad Yousif ◽  
Dina S. Ahmed ◽  
Benson M. Kariuki ◽  
Gamal A. El-Hiti
Keyword(s):  
Vinyl Chloride ◽  
Structure Elucidation ◽  
Poly Vinyl Chloride ◽  
Polymeric Chains ◽  
Process Decomposition ◽  
Stabilizing Effect ◽  
Surface Alteration ◽  
Tin Complexes ◽  
High Yields ◽  
Harsh Conditions

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.

Ligand substitution in the osmium carbonyl cluster Os2(CO)8(µ3-SbPh)Os(CO)3(Cl)2: Towards derivatives of the osmostibine metalloligand

2021 ◽  
Vol 942 ◽  
pp. 121817
Author(s):  
Ying-Zhou Li ◽  
Zhi-Rui Yuan ◽  
Rakesh Ganguly ◽  
Yongxin Li ◽  
Deborah Roshni Rajaratnam ◽  
...  
Keyword(s):  
Ligand Substitution ◽  
Carbonyl Cluster ◽  
Osmium Carbonyl ◽  
Derivatives Of

Moessbauer spectroscopy of octahedral tin complexes

1969 ◽  
Vol 8 (10) ◽  
pp. 2145-2148 ◽  
Author(s):  
Rolfe H. Herber ◽  
Hwa-Sheng Cheng
Keyword(s):  
Moessbauer Spectroscopy ◽  
Tin Complexes

Tin complexes derived from nitrogen-based 1,3,5-heterocyclohexanes bearing 2-hydroxypropan-1-yl, 2-diphenylphosphitepropan-1-yl and 2-diphenylphosphinepropan-1-yl as pendant N-substituents

2022 ◽  
pp. 132368
Author(s):  
Alfonso Xotlanihua-Flores ◽  
Tayde O. Villaseñor-Granados ◽  
Raúl Colorado-Peralta ◽  
Sonia A. Sánchez-Ruiz ◽  
Pedro Montes-Tolentino ◽  
...  
Keyword(s):  
Tin Complexes

The protective properties of synthetic porphyrin tin complexes in toxic hyperbilirubinemia

2000 ◽  
Vol 04 (03) ◽  
pp. 243-247 ◽  
Author(s):  
T. O. PHILIPPOVA ◽  
B. N. GALKIN ◽  
N. YA. GOLOVENKO ◽  
Z. I. ZHILINA ◽  
S. V. VODZINSKII
Keyword(s):  
Heme Oxygenase ◽  
Serum Bilirubin ◽  
Protoporphyrin Ix ◽  
Serum Bilirubin Level ◽  
Oxygenase Activity ◽  
Tetraphenyl Porphyrin ◽  
Tin Complexes ◽  
Cytochrome P 450

Tin complexes of meso-substituted synthetic porphyrins, namely Sn 4+-meso-tetraphenyl- porphyrin ( Sn - TPP ) and Sn 4+-meso-tetrakis(N-methyl-3-pyridyl)porphyrin tetratosylate ( Sn - TMe -3- PyP ), efficiently decrease the serum bilirubin level when injected subcutaneously at a dose of 100 μM kg−1 body weight into mice. These compounds are active during hyperbilirubinemia, induced by phenylhydrazine, hemin and tetrachloromethane, and also during autoimmune hemolytic anemia. In the latter case a decrease in serum bilirubin content was observed, as well as a decrease in the amount of blood reticulocytes which reflects a milder course of the disease. The Sn complexes under study induce, in vivo, cytochrome P-450, inhibit microsomal heme oxygenase and decrease the intensity of lipid peroxidation. At the same time, in vitro the hepatic and splenic heme oxygenase activity is blocked only when a 0.1 μM concentration of Sn - TMe -3- PyP or Sn -protoporphyrin IX is added to the incubation mixture. Sn - TPP does not affect the activity of this enzyme in vitro.

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