Takudrei

160
From {Bi22O26} to Chiral Ligand-Protected {Bi38O45}-Based Bismuth Oxido Clusters

D. Mansfeld, L. Miersch, T. Rüffer, D. Schaarschmidt, H. Lang, T. Böhle, R. W. Troff, C. A. Schalley, J. Müller, M. Mehring— 2011

The reaction of [Bi22O26(OSiMe2tBu)14] (1) in THF with salicylic acid gave [Bi22O24(HSal)14] (2) first, which was converted into [Bi38O45(HSal)22(OH)2(DMSO)16.5] ⋅DMSO⋅H2O (3⋅DMSO⋅H2O) after dissolution and crystallization from DMSO. Single-crystal X-ray diffraction analysis and ESI mass spectrometry associated with infrared multi-photon dissociation (IRMPD) tandem MS experiments confirm the formation of the large and quite stable bismuth oxido cluster 3. The reaction of compound 2 with the butoxycarbonyl(BOC)-protected amino acids phenylalanine and valine (BOC-PheOH and BOC-ValOH), respectively, resulted in the formation of chiral [Bi38O45(BOC-AA)22(OH)2] (AA=deprotonated amino acid), as shown by a combination of different analytical techniques such as elemental analysis, dynamic light scattering, circular dichroism spectroscopy, and ESI mass spectrometry.

Title160
From {Bi22O26} to Chiral Ligand-Protected {Bi38O45}-Based Bismuth Oxido Clusters
AuthorD. Mansfeld, L. Miersch, T. Rüffer, D. Schaarschmidt, H. Lang, T. Böhle, R. W. Troff, C. A. Schalley, J. Müller, M. Mehring
Date20111125
IdentifierDOI 10.1002/chem.201102437
Source(s)
CitationChem. Eur. J. 2011, 17, 14805-14810