@article{oai:nagasaki-u.repo.nii.ac.jp:02000111, author = {野口, 大介}, issue = {101}, journal = {長崎大学大学院工学研究科研究報告, Reports of Graduate School of Engineering, Nagasaki University}, month = {Jul}, note = {The crystal structures of rare earth elements ethylenediaminetetraacetate (REE-EDTA), including potential applications towards biomedical engineering in MRI, have been briefly reviewed by some researchers. However, there is no systematization of almost all of REE-EDTA complexes; therefore, in the present study, a total of 114 kinds of REE-EDTA (except Sc, Pm, and Tm) were searched in the Cambridge Crystallographic Data Centre (CCDC) and their coordination numbers (C.N.) are summarized. The largest number of registered REE-EDTA is La-EDTA for 22 kinds, followed by 15 Gd-EDTA. The C.N. of each complex ranged from 10 to 9 for light REE (La–Sm) and 10 to 8 for heavy REE (Y and Eu–Lu), suggesting that a decreasing in the C.N. of lanthanoid (Ln)-EDTA is considered to be due to ‘lanthanoid contraction’. The C.N. of Tb-EDTA deviated slightly from the overall decreasing C.N. in Ln-EDTA complexes would be because of a lack of a sufficient number of the studied samples., 長崎大学大学院工学研究科研究報告, 53(101), pp.46-53; 2023}, pages = {46--53}, title = {希土類-エチレンジアミン四酢酸(REE-EDTA)の結晶状態における配位数:ミニ・レビュー}, volume = {53}, year = {2023} }