The π-pyrrole complexation of alkali metal ions by zirconium meso-octaalkylporphyrinogens: Encapsulation of Li4H4 and Li2O in sandwich structures

Angewandte Chemie - International Edition

Volumn 37, Issue 16, 1998, Pages 2245-2248

  Floriani, Carlo ^a   Solari, Euro ^a   Solari, Giovanna ^a   Chiesi Villa, Angiola ^b   Rizzoli, Corrado ^b  

^a UNIVERSITY OF LAUSANNE   (Switzerland)

^b NONE

Author keywords

Calixpyrroles; Ion pairs; Lithium; Porphyrinogens

Indexed keywords

EID: 0031712542     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1521-3773(19980904)37:16<2245::AID-ANIE2245>3.0.CO;2-J     Document Type: Article

References (27)

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23. We do not have an explanation for the unusual color of such Zr-porphyrinogen complexes, however, it does not arise from any impurity, since it remains the same even after a number of extractions-crystallizations. The rather low solubility in innocent solvents does not allow an easy spectral analysis in solution. For such a case, see: M. W. Renner, J. W. Buchler, J. Phys. Chem. 1995, 99, 8045-8049.
24. -1: crystal dimensions 0.23 × 0.29 × 0.34 mm. For 2505 unique observed reflections [I > 2σ(I)] collected at T = 295 K on a Rigaku AFC6S diffractometer (6 < 2θ < 50°) the conventional R value is 0.026 (wR2 = 0.043 for the 4570 unique reflections having I > 0 used in the refinement). Crystallographic data (excluding structure factors) for the structures reported in this paper have been deposited with the Cambridge Crystallographic Data Center as supplementary publication no. CCDC-101526 . Copies of the data can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB21EZ, UK (fax: (+44) 1223-336-033; e-mail: deposit@ccdc.cam. ac.uk).
25. a) A. F. Wells, Structural Inorganic Chemistry 5th ed., Oxford University Press, Oxford, 1986, p. 344;
26. b) ibid. p. 534.
27. 2] will be reported in a forthcoming paper. The alternative use of the sodium instead of the lithium porphyrinogen is dictated by easier separation of NaCl from the reaction mixture.