“…Pentanuclear heterometallic M 5ÀX M 0 X (NIP) 4 frameworks The choice of a M 5 (NIP) 4 framework for our studies was based on several facts such as, it possesses a larger metal node ensemble size with nuclearity ¼ 5, and therefore, the possibility of stronger metal-metal interactions and electron coupling. 49,50 However, the pentanuclear metal cluster resulted in a signicant complication for the second metal with the incorporation. Thus, the main challenge in the case of pentanuclear heterometallic Cu 5ÀX M 0 X (NIP) 4 systems was preservation of framework integrity aer M 0 integration.…”