Mechanical vs Electronic Strain: Oval-Shaped Alkynyl-Pt(II)-Phosphine Macrocycles

0520839 - ÚOCHB 2020 RIV US eng J - Journal Article
Plutnar, Jan - Givelet, Cecile - Lemouchi, Cyprien - Jaklová Dytrtová, Jana - Císařová, I. - Teat, S. J. - Michl, Josef
Mechanical vs Electronic Strain: Oval-Shaped Alkynyl-Pt(II)-Phosphine Macrocycles.
Organometallics. Roč. 38, č. 24 (2019), s. 4633-4644. ISSN 0276-7333. E-ISSN 1520-6041
EU Projects: European Commission(XE) 227756 - DIPOLAR ROTOR ARRAY
Institutional support: RVO:61388963
Keywords : molecular rectangles * ligand-exchange * complexes
OECD category: Organic chemistry
Impact factor: 3.804, year: 2019
Method of publishing: Limited access
https://pubs.acs.org/doi/10.1021/acs.organomet.9b00633

Pyridine-terminated molecular rods and either (i) the cis-(dppp)(I)Pt(C≡C-triptycene-C≡C)Pt(I)(dppp) rod or (ii) the trans-(PEt3)2(I)Pt(C≡C-biphenyl-C≡C)Pt(I)(PEt3)2 rod assemble into macrocycles, characterized by NMR, ESI-IMS, and in two cases also single-crystal X-ray diffraction. The former form rectangles with bidentate phosphine-containing cis-coordinated Pt(II)-alkyne corners. In the latter, the preference of the Pt centers for a trans configuration overrules the preference of the triple bonds for linearity and NMR shows that they have oval structures with alternating bent rod and bent trans (C≡C)Pt(PEt3)2(C≡C) components, in agreement with density functional theory calculations.
Permanent Link: http://hdl.handle.net/11104/0305645