Stabilization of Cu7 clusters in azide networks: syntheses, structures and magnetic behaviour

Dalton Transactions : an International Journal of Inorganic Chemistry
Subhradeep MistrySrinivasan Natarajan

Abstract

Two new azide bridged copper(II) coordination polymer compounds, [Cu7(N3)14(C3H10N2)(C4H13N3)]n (I) and [Cu7(N3)14(C3H10N2)(C5H15N3)2]n (II) [where C3H10N2 = 1,2-diaminopropane (1,2-DAP); C4H13N3 = diethylenetriamine (DETA); C5H15N3 = N-2-aminoethyl-1,3-propanediamine (AEDAP)] were prepared by employing a room temperature diffusion technique involving three layers. Single crystal studies reveal that both compounds I and II, have similar connectivity forming Cu7 clusters through end-on (EO) bonding of the azide. The Cu7 clusters are connected through end-to-end (EE) connectivity of the azides forming three-dimensional structures. Magnetic studies confirmed the ferromagnetic interactions within the Cu7 units and revealed the occurrence of concomitant ferro- and antiferro-magnetic interactions between these clusters. As a result I behaves as a weak-ferromagnet with TC = 10 K.

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Citations

May 13, 2017·Chemistry, an Asian Journal·Subhradeep MistrySrinivasan Natarajan
Jul 11, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Negar Rad-YousefniaTadeusz Lis
Jul 3, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiangyu LiuEmilio Pardo
Dec 19, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Kwang Soo LimChang Seop Hong

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