Four Inorganic-Organic Hybrid Borates: From 2D Layers to 3D Oxoboron Cluster Organic Frameworks

Chong-An Chen; Rui Pan; Xu-Yan Li; Dan Qin; Guo-Yu Yang

doi:10.1021/acs.inorgchem.1c02904

Four Inorganic-Organic Hybrid Borates: From 2D Layers to 3D Oxoboron Cluster Organic Frameworks

Inorg Chem. 2021 Dec 6;60(23):18283-18290. doi: 10.1021/acs.inorgchem.1c02904. Epub 2021 Nov 19.

Authors

Chong-An Chen¹, Rui Pan², Xu-Yan Li¹, Dan Qin¹, Guo-Yu Yang¹

Affiliations

¹ MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China.
² Beijing Aerospace Long March Aircraft Research Institute, Beijing 100076, China.

PMID: 34797632
DOI: 10.1021/acs.inorgchem.1c02904

Abstract

Four inorganic-organic hybrid borates, K[B₆O₉(OH)(en)]·H₂O (1, en = ethylenediamine), K[B₆O₉(OH)(1,3-dap)]·H₂O (2, 1,3-dap = 1,3-diaminopropane), K[B₆O₉(OH)(1,6-dah)_0.5]·H₂O (3, 1,6-dah = 1,6-diaminlhexane) and [(1,3-dap)Cd@B₅O₈(OH)]·0.5H₂O (4), were made under solvothermal conditions. 1 and 2 are isostructural and feature a 2D layer built by B₆O₉(OH) clusters and modified by en and 1,3-dap via B-N-C linkages. By replacing en and 1,3-dap with longer and more flexible 1,6-dah, a new type of oxoboron cluster organic framework 3 was obtained, which was composed of the same B₆O₉(OH) cluster layers as in 1 and 2 and 1,6-dah linkers. By replacing alkali metal K with transition metal Cd under similar synthetic conditions, another type of oxoboron cluster organic framework 4 was made in which the Cd-centered wheel cluster layers and 1,3-dap linkers were connected via Cd-N-C linkages.