Linking Rings through Diamines and Clusters: Exploring Synthetic Methods for Making Magnetic Quantum Gates

✍ Scribed by Marco Affronte; Ian Casson; Marco Evangelisti; Andrea Candini; Stefano Carretta; Christopher A. Muryn; Simon J. Teat; Grigore A. Timco; Wolfgang Wernsdorfer; Richard E. P. Winpenny

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 181 KB
• Volume: 44
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/anie.200502505

✦ Synopsis

Those of us interested in polymetallic complexes still strive to control the structures formed, as this is vital if we are ever to exploit their properties. One of the more interesting approaches is to use "templates" to control either the size of clusters or even their shape. Beyond that challenge lies another: how do we assemble cage complexes into materials in a controlled manner? Further motivation to answer this latter question has arisen from theoretical studies, which propose that S = 1/2 clusters could be used as quantum bits (qubits) in quantum information processing (QIP). Herein, we describe our initial experiments in which we link S = 1/2 wheels to each other. Linking two molecules with S = 1/2 will allow the study of conditioned dynamics of the magnetization of each molecule and thus let us examine the possibility of implementing quantum gates within molecular clusters.

Previously we reported the first heterometallic octanuclear rings, [{NH 2 R 2 }{Cr 7 MF 8 (O 2 CCMe 3 ) 16 }] (R = alkyl side chains; M = Ni II , Co II , Fe II , Mn II , or Cd II ). For QIP, singlequbit operations require an S = 1/2 ground state. Among the heterometallic {Cr 7 M} rings, this condition is met for M = Ni II , which therefore represents an appealing candidate. How-[