pH-Dependent Self-Assembly of Complexes with Tripodal Amino Acid Ligand

• Published in: Zeitschrift für anorganische und allgemeine Chemie (1950) Vol. 639; no. 5; pp. 733 - 738
• Main Authors: Qi, Zhao-Peng, Cheng, Xing, Li, Pei-Yu, Zhang, Hui, Zhou, Hong-Fei, Zhou, Lei
• Format: Journal Article
• Language: English; German
• Published: Weinheim WILEY-VCH Verlag 01.04.2013; WILEY‐VCH Verlag; Wiley Subscription Services, Inc
• Subjects: Cadmium; Copper; Crystal growth; Self-assembly
• ISSN: 0044-2313; 1521-3749
• DOI: 10.1002/zaac.201200527

Three new metal complexes were synthesized by reactions of [bis(2‐amino‐ethyl)‐amino]‐acetic acid (HL) and different metal salts at different pH values. Their structures were characterized by X‐ray crystallography. Interestingly, under acidic conditions, the dinuclear structure {Cu2[H(L)]2Cl2}(ClO4)2 (1) was obtained, whereas under alkaline conditions, the complexes {[Cu(L)](ClO4)}n (2) and [Cd(L)Cl]n (3), which exhibit distinct one‐dimensional (1D) structures, were obtained. The results indicate that the pH value, metal ions, and anions have remarkable influence on the formation and structure of the complexes.