Sodium Ion Directed Self‐assembly with N‐benzesulfonyl‐l‐glutamic Acid

A 3‐D sodium (I) complex driven by the coordination bonds with empirical formula [Na(Bs‐gluH)]_n (Bs‐gluH=N‐benzesulfonyl‐l‐glutamic acid monoanion) has been synthesized and characterized. Its X‐ray crystal structure shows that the complex belongs to a monoclinic system, P2₁ space group, a=5.3141(12) Å, b=15.786(3) Å, c=7.8390(17) Å, β=104.021(3)°. The sodium atoms are 5‐coordinated NaO₅. Each BsgluH ligand links five sodium atoms and each sodium centre interacts with five Bsglu ligands. To the best of our knowledge, 1 is the first 3D framework sustained only by coordination interactions between alkali metals and N‐protected amino acid.

Keywords:

• N‐benzesulfonyl‐l‐glutamic acid
• crystal structure
• sodium ion

This work was supported by the Natural Science Foundation of China (No. 20771054), Henan tackle key problem of science and technology (Nos. 072102270030 and 072102270034) and the Foundation of Education Committee of Henan province (Nos. 2006150017 and 2008A150018).