Ionic Cyclopropenium-Derived Triplatinum Cluster Complex [(Ph₃C₃)₂Pt₃(MeCN)₄]²⁺(BF₄^–)₂: Synthesis, Structure, and Perspectives for Use as a Catalyst for Hydrosilylation Reactions

Abstract

This study presents a methodology for the synthesis of the ionic cyclopropenium-derived triplatinum cluster complex [(Ph 3 C 3 ) 2 Pt 3 (MeCN) 4 ] 2+ (BF 4 − ) 2 and its analogue with the replacement of one of the BF 4 − anions with a Cl − anion, which represents a chain coordination polymer in crystalline form. The structures of the complexes were studied by several physicochemical methods, primarily X-ray diffraction using synchrotron radiation and 195 Pt NMR spectroscopy in solution with measurement and analysis of the 195 Pt− 195 Pt and 13 C− 195 Pt spin−spin coupling constants. In addition, a high catalytic activity of the synthesized Pt 3 complex was observed in hydrosilylation reactions. The catalytic efficiency of the complex was found to be comparable to that of Karstedt's catalyst and in some cases even higher.

Organic platinum compounds containing two or more platinum–carbon bonds. Synthesis, structure, possibilities of practical application

“…В литературе представлена методология синтеза ионного триплатинового кластерного комплекса [(Ph 3 C 3 ) 2 Pt 3 (MeCN) 4 ] 2+ (BF 4-) 2 (29) на основе тетрафторбората циклопропения (30) и его аналога с заменой одного из анионов BF 4на Clанион, представляющий собой цепной координационный полимер в кристаллической форме [10]: Нейтральные комплексы [(N^N)PtMes 2 ] (Mes = мезитил), N^N = бис(1-метил-2имидазолил)кетон или N,N'-дизамещенные 1,2-бис-иминоаценафтены были получены и охарактеризованы как производные Pt(II) с планарной конфигурацией N 2 PtC 2 и переходами с переносом заряда в видимой области [15]. Комплексы получены в результате взаимодействия N,N'-хелатных лигандов с цис-[(ДМСО) 2 PtMes 2 ].…”

“…Описаны синтез, характеристики и каталитическая гидросилилирующая активность ди-ωалкенильных соединений платины(II) PtR 2 , где R = CH 2 SiMe 2 (винил) (9) или CH 2 SiMe 2 (аллил)(10), и их аддуктов с 1,5-циклооктадиеном (ЦОД, 11), дибензо[а,е]циклооктатетраеном (ДБЦОТ) и норборнадиеном (НБД), которые можно рассматривать как медленно высвобождаемые источники реакционноспособных соединений 9 и 10 [5]:…”

Structure and Dynamic Rearrangements of the Pt2dba3 and Pd2dba3 Complexes in Solution

“…Pt 2 dba 3 is a widely utilized source of Pt species for catalysis and a precursor of Pt compounds. Many nanoscale , and bimetallic , catalysts, electrocatalysts, − functional materials, − homogeneous catalysts, − and metal complexes for materials science − can be generated from these materials. Moreover, there are examples of direct use of Pt 2 dba 3 as a catalyst. − However, despite the significance of this compound, its structure has not yet been fully established.…”

Examination of Pt2dba3 as a “cocktail”-type catalytic system for alkene and alkyne hydrosilylation reactions

“…Tris(dibenzylideneacetone)diplatinum Pt 2 dba 3 is widely applied as a platinum(0) source [54][55][56][57][58][59][60][61][62] and, in contrast to Karstedt's catalyst, is practically convenient and handy to use. It is a stable dark solid that can be obtained from available reagents such as tetrachloroplatinate(II) and hexachloroplatinic(IV) acid.…”