10.1021/cg5003836.s002
Kongzhao Su
Kongzhao
Su
Feilong Jiang
Feilong
Jiang
Jinjie Qian
Jinjie
Qian
Yanli Gai
Yanli
Gai
Mingyan Wu
Mingyan
Wu
Salem M. Bawaked
Salem M.
Bawaked
Mohamed Mokhtar
Mohamed
Mokhtar
Shaeel
A. AL-Thabaiti
Shaeel
A.
AL-Thabaiti
Maochun Hong
Maochun
Hong
Generalized Synthesis
of Calixarene-Based High-Nuclearity
M<sub>4<i>n</i></sub> Nanocages (M = Ni or Co; <i>n</i> = 2–6)
American Chemical Society
2014
chair conformation
antiferromagnetic interactions
Ni
building blocks
sodium ions
title coordination cages
Generalized Synthesis
Co
Structural analyses
solvothermal syntheses
MBB
phosphonate ligands
nanocage
2014-06-04 00:00:00
Dataset
https://acs.figshare.com/articles/dataset/Generalized_Synthesis_of_Calixarene_Based_High_Nuclearity_M_sub_4_i_n_i_sub_Nanocages_M_Ni_or_Co_i_n_i_2_6_/2286532
A family
of high-nuclearity M<sub>4<i>n</i></sub> (M
= Ni or Co, <i>n</i> = 2–6) coordination nanocages
constructed by M<sub>4</sub>–calix[4]arene molecular building
blocks (MBBs) with inorganic phosphate or organic phosphonate ligands
have been isolated by solvothermal syntheses and characterized by
single-crystal X-ray diffraction. This family can be divided into
five structural types with an increase in the number of M<sub>4</sub>–calix[4]arene MBBs, including Ni<sub>8</sub> (<b>1</b> and <b>2</b>, <i>n</i> = 2), M<sub>12</sub> (M =
Ni (<b>3</b>) and Co (<b>4</b>), <i>n</i> =
3), M<sub>16</sub> (M = Ni (<b>5</b>) and Co (<b>6</b>), <i>n</i> = 4), Co<sub>20</sub> (<b>7</b>, <i>n</i> = 5), and Co<sub>24</sub> (<b>8</b>, <i>n</i> = 6) coordination nanocages. Structural analyses reveal that the
metallic cores of <b>1</b> and <b>2</b> are arranged in
chair conformation, while compounds <b>3</b>–<b>6</b> with closed-shell structures, where their ports are sealed by sodium
ions, present the first examples of 2p-3d heterometallic metal–calixarene
nanocages to our knowledge. The novel helmet-like Co<sub>20</sub> (<b>7</b>) is the only one in this family with an open-shell structure,
which can be thought of as a truncated octahedral Co<sub>24</sub> (<b>8</b>) nanocage cutting one face. Furthermore, the magnetic behaviors
of <b>1</b>–<b>8</b> have been investigated, suggesting
the existence of strong antiferromagnetic interactions between magnetic
centers for all title coordination cages.