Structural insights into two inorganic-organic hybrids based on chiral amino acids and polyoxomolybdates

The highly water soluble Anderson-Evans POM has a very special structure with the average dimensions 8.6 × 8.6 × 2.7 Å3 which allows positioning of this POM into narrow protein clefts or migration through narrow channels inaccessible for larger POMs, and make it suitable choice for protein crystallization. To our knowledge, only little structure information is available regarding the L-His-POM in Cambridge Structure Database (CSD). Thus, compound 1 provides an opportunity to probe the interaction of l-histidine (L-His) amino acid as protein building blocks, and Anderson type POM in detail.227