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A New Cadmium‐Based Pb 2 Cd 3 (PO 4 ) 2 (P 2 O 7 ) with Two Types of Isolated P–O Groups
Author(s) -
Chen Wenqiang,
Jing Qun,
Zhang Qiaoqiao,
Lee MingHsien,
Lu Xuefang,
Wei Ping,
Chen Zhaohui
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201900002
Subject(s) - chemistry , crystallography , lone pair , crystal structure , dimer , cadmium , metal , infrared spectroscopy , phosphate , transition metal , inorganic chemistry , stereochemistry , molecule , biochemistry , organic chemistry , catalysis
transition metal with d 10 electrons and lone pair cations with large radius into phosphate systems are helpful to get new crystal structure configuration. Guided by the above method, the first lead cadmium phosphate, Pb 2 Cd 3 (PO 4 ) 2 (P 2 O 7 ), was synthesized. Pb 2 Cd 3 (PO 4 ) 2 (P 2 O 7 ) features a three‐dimensional (3D) structure, in which Pb(1) 2 O 8 dimer and Pb(2)O 5 polyhedra are filled between the two‐dimensional (2D) layers, which are composed of unique [Cd 6 P 8 O 30 ] groups. In the Pb II M II PO (M II = without or divalent metal ions) systems, the title compound is the first phosphate containing two different P–O groups simultaneously. The ratios of cation/phosphorus (C/P) and polymerization modes of P–O anions have a close relationship by many structural comparisons. Thermal analysis shows that Pb 2 Cd 3 (PO 4 ) 2 (P 2 O 7 ) melts congruently and is thermally stable. In addition, the UV/Vis‐IR diffuse reflectance spectrum and infrared (IR) spectrum have been reported. The relationship between electronic structure and optical properties was clarified by first‐principles studies.