title: bis-Nitrile and bis-Dialkylcyanamide Platinum(II) Complexes as Efficient Catalysts for Hydrosilylation Cross-Linking of Siloxane Polymers
metadata.name: dc.contributor.author
metadata.value: Islamova, Regina M.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Dobrynin, Mikhail V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Ivanov, Daniil M.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Vlasov, Andrey V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kaganova, Elena V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Grigoryan, Galina V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kukushkin, Vadim Yu.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2016-04-08T10:16:08Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2016-04-08T10:16:08Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2016
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/2002
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: cis- and trans-Isomers of the platinum(II) nitrile complexes [PtCl2(NCR)2] (R = NMe2,
  N(C5H10), Ph, CH2Ph) were examined as catalysts for hydrosilylation cross-linking of vinyl-terminated
  polydimethylsiloxane and trimethylsilyl-terminated poly(dimethylsiloxane-co-ethylhydrosiloxane)
  producing high quality silicone rubbers. Among the tested platinum species the cis-complexes
  are much more active catalysts than their trans-congeners and for all studied platinum complexes
  cis-[PtCl2(NCCH2Ph)2] exhibits the best catalytic activity (room temperature, c = 1.0   10 4 mol/L,
   pot-life 60 min,  curing 6 h). Although cis-[PtCl2(NCCH2Ph)2] is less active than the widely used
  Karstedt’s catalyst, its application for the cross-linking can be performed not only at room temperature
  (c = 1.0   10 4 mol/L), but also, more efficiently, at 80  C (c = 1.0   10 4–1.0   10 5 mol/L) and
  it prevents adherence of the formed silicone rubbers to equipment. The usage of the cis- and
  trans-[PtCl2(NCR)2] complexes as the hydrosilylation catalysts do not require any inhibitors and,
  moreover, the complexes and their mixtures with vinyl- and trimethylsilyl terminated polysiloxanes
  are shelf-stable in air. Tested catalysts do not form colloid platinum particles after the cross-linking.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: This project was supported by Federal Target Program (grant 14.576.21.0028).
  Andrey V. Vlasov and Vadim Yu. Kukushkin are much obliged to Saint Petersburg State University for a
  postdoctoral fellowship (12.50.1188.2014) and research grant (12.38.225.2014), correspondingly. The authors also express their gratitude to the Center of Thermal Analysis and Calorimetry (Saint Petersburg State University) for physicochemical measurements.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: platinum nitrile complexes; hydrosilylation; cross-linking; catalysis; silicon rubber
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: bis-Nitrile and bis-Dialkylcyanamide Platinum(II) Complexes as Efficient Catalysts for Hydrosilylation Cross-Linking of Siloxane Polymers
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: Molecules_Islamova_2016.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/2002/1/Molecules_Islamova_2016.pdf
resources.format: Adobe PDF
resources.size: 1,35 MB