35273-41-7Relevant articles and documents
Heteroleptic platinum(II) and palladium(II) complexes with thiacrown and diimine ligands
Grant, Gregory J.,Talbott, Natalie N.,Bajic, Marko,Mehne, Larry F.,Holcombe, Thomas J.,Vanderveer, Donald G.
, p. 89 - 97 (2012)
We wish to report the synthesis, crystal structures, spectroscopic and electrochemical properties of several new Pt(II) heteroleptic complexes containing the thiacrown, 9S3 (1,4,7-trithiacyclononane) with a series of substituted phenanthroline ligands and
New PtII diimine-dithiolate complexes containing a 1,2-dithiolate-1,2-closo-dicarbadodecarborane: An experimental and theoretical investigation
Pintus, Anna,Aragoni, M. Carla,Coles, Simon J.,Coles, Susanne L.,Isaia, Francesco,Lippolis, Vito,Musteti, Ana-Daniela,Teixidor, Francesc,Vinas, Clara,Arca, Massimiliano
, p. 13649 - 13660 (2014/11/08)
Five new [Pt(N∧N)(dtoc)] complexes (1-5; N^N = diimine: 2,2′-bipyridine and its 4,4′-alkyl/aryl-substituted derivatives or 1,10-phenanthroline; dtoc2- = 1,2-dithiolate-1,2-closo- dicarbadodecaborane) have been synthesized and characterized by spectroscopic and electrochemical methods, and by means of X-ray diffraction in the case of complexes 1 and 4. Hybrid DFT and time-dependent (TD) DFT calculations were performed on complexes 1-5 and the previously reported complex [Pt(Ph 2phen)(dtoc)] (6; Ph2phen = 4,7-diphenyl-1,10- phenanthroline) both in the gas phase and in the presence of several solvents (CH2Cl2, CHCl3, CH3CN, acetone, THF, DMF, DMSO, and toluene) to gain an insight into the electronic structure of the complexes and explain their experimental features. Theoretical calculations allowed for the determination of structure-property relationships within the series of the six complexes considered, and the prediction of their second order nonlinear optical (SONLO) properties by evaluating their first static hyperpolarizabilities (βtot). the Partner Organisations 2014.
Self-association of new mixed-ligand diimine-N-acyl-N′,N′-dialkyl thioureate complexes of platinum(II) in acetonitrile solution
Koch, Klaus R.,Sacht, Cheryl,Lawrence, Claire
, p. 689 - 695 (2007/10/03)
The complexes [Pt(bipy)L]PF6 and [Pt(phen)L]PF6 (HL = N-acyl-N′,N′-di-n-butylthiourea) showed pronounced self-association in CD3CN solution at 25 °C according to an equilibrium 2[Pt(diimine)-(L-S,O)]+ ? [{Pt(diimine)(L-S,O)}2]2+ for which association constants, KD, have been estimated from the concentration dependence of the 1H NMR shifts of these complexes. The values of KD range from 1.8 to 114 M-1 depending on the structure of the diimine as well as the nature of the N-acyl group; the values of the 1,10-phenanthroline complexes are generally larger than those for the corresponding 2,2′-bipyridine analogues. In general, N-1-naphthoyl-N′,N′-dibutylthiourea complexes self-associate to a lesser extent than the corresponding N-benzoyl analogues. From the temperature dependence of the KD values, the thermodynamic parameters ΔG, ΔH and ΔS have been estimated. An average Δ(ΔG) increment of 2.4 ± 0.4 kJ mol-1 per aromatic ring of the diimine moiety co-ordinated to the complexes is consistent with energies generally associated with π-π stacking and cation π interactions observed for other systems.