The mol-ecule of the title compound, [PtH2(C6H18N3P)2], has a centrosymmetric square-planar structure in which the Pt(II) atom is bonded to two H and two P atoms in a mutually trans configuration. The Pt(II) atom sits on an inversion center and thus the asymmetric unit contains only half the mol-ecule. The Pt-P and Pt-H distances are 2.2574 (10) and 1.49 (7) Å, respectively.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4438795 | PMC |
http://dx.doi.org/10.1107/S2056989015004351 | DOI Listing |
ACS Omega
December 2024
Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
Since the 1980s, pressure-sensitive paint (PSP) has been used as an optical pressure sensor for measuring surface pressure on aircraft models in wind tunnels. Typically, PSPs have utilized platinum(II)-5,10,15,20-tetrakis(2,3,4,5,6-pentafluorophenyl)-porphyrin due to its high pressure sensitivity, phosphorescence lifetime of ∼50 μs, reasonable quantum yield of emission, and resistance to photo-oxidation. This work investigates the photophysics and electronic structure of metal complexes of 5,10,15,20-tetrakis(2,3,4,5,6-pentafluorophenyl)-porphyrin, namely, Zn(II), Pd(II), and Ir(III), as potentially improved luminophores for polymer-based PSPs.
View Article and Find Full Text PDFJ Phys Chem A
December 2024
College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China.
A systematic theoretical study was performed on the electrophilic and nucleophilic properties of Group 10 square-planar metal compounds [M(SCNEt)] (M = Ni , Pd , and Pt ) and their complexes. The nucleophilic metal center and coordinated sulfur atom in [M(SCNEt)] facilitate the formation of metal-involving and conventional noncovalent bonds. The presence a heavier metal center results in a more negative electrostatic potential and a larger nucleophilicity, which in turn leads to the formation of stronger metal-involving noncovalent bonds than those formed by a lighter metal center.
View Article and Find Full Text PDFInorg Chem
December 2024
Key Laboratory of Advanced Light Conversion Materials and Biophotonics, School of Chemistry and Life Resources, Renmin University of China, Beijing 100872, China.
Bidentate Pt(II) complexes with cyclometalated -heteroarene or -heterocyclic carbene (NHC) ligands have been extensively studied as phosphorescent emitters over the past two decades. Herein, we introduce a difluoromethyl group (CFH) into the wingtip of NHCs, where CFH acts as a lipophilic hydrogen bond (HB) donor. Their cyclometalated Pt(II) complexes show excellent PLQYs (up to 93%) and phosphorescence lifetimes mainly due to the rigid structure with hydrogen bonding between the CFH group and the adjacent O atom at the β-diketonate ligand.
View Article and Find Full Text PDFJ Phys Chem A
July 2024
College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, China.
The metal-involving Ch···M chalcogen bond and the conventional Ch···O chalcogen bond between ChX (Ch = Se, Te; X = CCH, CN) acting as a Lewis acid and M(acac) (M = Pd, Pt; Hacac = acetylacetone) acting as a Lewis base were studied by density functional theory calculations. It has been observed that the nucleophilicity of the Pt complexes is higher than that of the corresponding Pd complexes. As a result, the Pt complexes tend to exhibit a more negative interaction energy and larger orbital interaction.
View Article and Find Full Text PDFOrg Biomol Chem
July 2024
State Key Laboratory of Fine Chemicals, Frontiers Science Centre for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China.
Heavy atom-free triplet photosensitizers (PSs) can overcome the high cost and biological toxicity of traditional molecular systems containing heavy atoms (such as Pt(II), Ir(III), Ru(II), Pd(II), Lu(III), I, or Br atoms) and, therefore, are developing rapidly. Connecting a stable free radical to the chromophore can promote the intersystem crossing (ISC) process through electron spin exchange interaction to produce the triplet state of the chromophore or the doublet (D) and quartet (Q) states when taking the whole spin system into account. These molecular systems based on the radical enhanced ISC (REISC) mechanism are important in the field of heavy atom-free triplet PSs.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!