0000000001301962
AUTHOR
Richard Knochenmuss
Superchiral Pd 3 L 6 Coordination Complex and Its Reversible Structural Conversion into Pd 3 L 3 Cl 6 Metallocycles
Large, non-symmetrical, inherently chiral bispyridyl ligand L derived from natural ursodeoxycholic bile acid was used for square-planar coordination of tetravalent Pd(II) , yielding the cationic single enantiomer of superchiral coordination complex 1 Pd3 L6 containing 60 well-defined chiral centers in its flower-like structure. Complex 1 can readily be transformed by addition of chloride into a smaller enantiomerically pure cyclic trimer 2 Pd3 L3 Cl6 containing 30 chiral centers. This transformation is reversible and can be restored by the addition of silver cations. Furthermore, a mixture of two constitutional isomers of trimer, 2 and 2', and dimer, 3 and 3', can be obtained directly from …
DOSY NMR, X-ray Structural and Ion-Mobility Mass Spectrometric Studies on Electron-Deficient and Electron-Rich M6L4 Coordination Cages.
A novel modular approach to electron-deficient and electron-rich M6L4 cages is presented. From the same starting compound, via a minor modulation of the synthesis route, two C3-symmetric ligands L1 and L2 with different electronic properties are obtained in good yield. The trifluoro-triethynylbenzene-based ligand L1 is more electron-deficient than the well-known 2,4,6-tri(4-pyridyl)-1,3,5-triazine, while the trimethoxy-triethynylbenzene-based ligand L2 is more electron-rich than the corresponding benzene analogue. Complexation of the ligands with cis-protected square-planar [(dppp)Pt(OTf)2] or [(dppp)Pd(OTf)2] corner-complexes yields two electron-deficient (1a and 1b) and two electron-rich …
CCDC 1062272: Experimental Crystal Structure Determination
Related Article: Pia Bonakdarzadeh, Filip Topić, Elina Kalenius, Sandip Bhowmik, Sota Sato, Michael Groessl, Richard Knochenmuss, Kari Rissanen|2015|Inorg.Chem.|54|6055|doi:10.1021/acs.inorgchem.5b01082
CCDC 1062271: Experimental Crystal Structure Determination
Related Article: Pia Bonakdarzadeh, Filip Topić, Elina Kalenius, Sandip Bhowmik, Sota Sato, Michael Groessl, Richard Knochenmuss, Kari Rissanen|2015|Inorg.Chem.|54|6055|doi:10.1021/acs.inorgchem.5b01082
CCDC 1062270: Experimental Crystal Structure Determination
Related Article: Pia Bonakdarzadeh, Filip Topić, Elina Kalenius, Sandip Bhowmik, Sota Sato, Michael Groessl, Richard Knochenmuss, Kari Rissanen|2015|Inorg.Chem.|54|6055|doi:10.1021/acs.inorgchem.5b01082