Unprecedented single-crystal-to-single-crystal topochemical conformational change and photoreduction of ethylene units in pi-stacked metallomacrocycle

作者：Rajakannu Palanisamy; Hussain Firasat; Shankar Bhaskaran; Sathiyendiran Malaichamy^*

来源：Inorganic Chemistry Communications, 2012, 26: 46-50.

DOI：10.1016/j.inoche.2012.09.025

• Metallomacrocycle
• Photochemistry
• Rhenium
• Single-crystal-to-single-crystal
• Topochemistry

Neutral n-stacked metallomacrocycle was prepared using fac-Re(CO)(3), and linear ditopic pi-conjugated nitrogen donors in water-toluene mixture under reflux condition. Two ethylene units in the cycle are parallel to each other with a distance of 3.4 angstrom, which undergo topochemical conformational change from a parallel conformation to criss-cross conformation and photoreduction under UV-light irradiation through single-crystal-to-single-crystal transformation (SCSC). The pi-stacked cycle and its photoproducts were characterized by H-1 NMR spectroscopy and X-ray diffraction studies.

• 出版日期2012-12