60648-70-6Relevant articles and documents
A CONVENIENT SYNTHESIS OF BIS(TRI-t-BUTYLPHOSPHINE)PLATINUM(0) AND ITS OXIDATIVE ADDITION AND LIGAND EXCHANGE REACTIONS
Goel, Ram G.,Ogini, William O.,Srivastava, Ramesh C.
, p. 405 - 417 (1981)
Pt2 (I) is prepared in high yield from a facile reaction of P(t-Bu)3 with K2PtCl4.Its oxidative addition reactions with CHCl3, CH2Cl2, MeI, and I2, and substitution reactions with CO, M(CO)6 (M=Cr, Mo, W), and t-BuNC have been investigated.Reaction with CHCl3 affords trans-PtHCl2 (II) and (III), and reaction with CH2Cl2 yields (IV).Pt2Me2(μ-I)22 (VI) and P(t-Bu)3MeI are formed in the reaction of I with MeI.VI undergoes intramolecular metalation to give (V), and CH4.Reaction of I with I2 results in the formation of V, trans-PtHI2 (VII) and P(t-Bu)3I2.CO readily displaces one phosphine from I to give Pt33(CO)3 (VIII).I reacts with M(CO)6 to afford VIII and M(CO)5P(t-Bu)3. t-BuNC replaces both the phosphines from I to give Pt3(t-BuNC)3(μ-t-BuNC)3 (IX).
A Molecular Rotor Possessing an H-M-H "spoke" on a P-M-P "axle": A Platinum(II) trans-Dihydride Spins Rapidly even at 75 K
Prack, Ernest,Okeefe, Christopher A.,Moore, Jeremy K.,Lai, Angel,Lough, Alan J.,Macdonald, Peter M.,Conradi, Mark S.,Schurko, Robert W.,Fekl, Ulrich
supporting information, p. 13464 - 13467 (2015/11/10)
A new class of low-barrier molecular rotors, metal trans-dihydrides, is suggested here. To test whether rapid rotation can be achieved, the known complex trans-H2Pt(PtBu3)2 was experimentally studied by 2H and 195Pt solid-state NMR spectroscopy (powder pattern changes with temperature) and computationally modeled as a tBu3P-Pt-PtBu3 stator with a spinning H-Pt-H rotator. Whereas the related chloro-hydride complex, trans-H(Cl)Pt(PtBu3)2, does not show rotational behavior at room temperature, the dihydride trans-H2Pt(PtBu3)2 rotates fast on the NMR time scale, even at low temperatures down to at least 75 K. The highest barrier to rotation is estimated to be ~3 kcal mol-1, for the roughly 3 ? long rotator in trans-H2Pt(PtBu3)2.
Unexpected substitution reactions of bis(phosphine)platinum ethene complexes
Chaloner, Penny A.,Broadwood-Strong, Gillian T. L.
, p. 1039 - 1043 (2007/10/03)
Reaction of [Pt(C2H4)(PR3)2] (R = Ph or C6H4Me-4) with moderately bulky phosphines at low temperatures did not give the expected tris- or tetrakis-phosphine complexes. Instead, mixed-phosph