The chemistry of tri- and high-nuclearity palladium(II) and platinum(II) complexes

Tiara-like Octanuclear Palladium(II) and Platinum(II) Thiolates and Their Inclusion Complexes with Dihalo- or Iodoalkanes

“…Metal thiolates are an important class of compounds because of their structural diversity in coordination chemistry, [1][2][3] relevance to cofactors of metalloproteins in biological systems, [4][5] and importance in cluster and surface science [6][7] and catalysis. 8 Thiolate-bridged polynuclear group 10 transition-metal complexes with chain structures, [M(-SR) 2 ] n (M = Ni, Pd), have been investigated in detail because they provide efficient catalysis of atom-economical organic reactions such as regioselective additions of thiols and disulfides across alkynes.…”

“…8 Thiolate-bridged polynuclear group 10 transition-metal complexes with chain structures, [M(-SR) 2 ] n (M = Ni, Pd), have been investigated in detail because they provide efficient catalysis of atom-economical organic reactions such as regioselective additions of thiols and disulfides across alkynes. [8][9][10][11][12][13] Tiara-like complexes, which are also polynuclear group 10 transition-metal thiolates and are characterized by toroidal architectures, have been studied extensively, both in terms of their intriguing structural features and with respect to the preparation of monodisperse metal sulfide nanoparticles, 14 non-linear optical materials, 15 photoactive water-reducing catalysts, [16][17] and host-guest chemistry.…”

“…[8][9][10][11][12][13] Tiara-like complexes, which are also polynuclear group 10 transition-metal thiolates and are characterized by toroidal architectures, have been studied extensively, both in terms of their intriguing structural features and with respect to the preparation of monodisperse metal sulfide nanoparticles, 14 non-linear optical materials, 15 photoactive water-reducing catalysts, [16][17] and host-guest chemistry. 15,[18][19][20][21] Tiara-like nickel complexes have received considerable attention resulting in the preparation of complexes with a variety of ring sizes [Ni(-SR) 2 ] n (n = [4][5][6][8][9][10][11][12]. 15,[17][18][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] In contrast, although several tiara-like hexanuclear palladium complexes have been reported, 9,14,…”

“…15,[17][18][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] In contrast, although several tiara-like hexanuclear palladium complexes have been reported, 9,14,19,[36][37][38][39][40][41][42][43] only one octanuclear complex, i.e., [Pd(-S n Pr) 2 ] 8 , is known, and was obtained as a mixture with hexanuclear [Pd(-S n Pr) 2 ] 6 . 19 For platinum, infinite thiolates and selenolates [Pt(-ER) 2 ] ∞ (E = S, Se) have been synthesized using a solvothermal method; 37 however, to the best of our knowledge, no tiara-like complexes have been reported thus far.…”

“…We successfully synthesized an octanuclear palladium complex using this conventional method. Moreover, we also developed an alternative synthetic method using m-C 6 H 4 (CMe 2 SR) 2 as the thiolate ligand source. The latter method was found to be advantageous for the synthesis of a platinum complex.…”