Synthesis and crystal structure of a new neodymium cryptate of a ligand derived from 2,6-diformylpyridine

Abstract

A new neodymium cryptate [NdL](NO)₃·H₂O (L = 1,4,12,15,18,26,31,39,42,43,44-undecaazapentacyclo-[13.13.13.1^6,10.1^20,24.1^33,37]-tetratetraconta-4,6,8,10(44)11,18,20,22,24(43),25,31,33,35,37(42),38-pentadecaene) was synthesized by the reaction of free ligand L with neodymium nitrate and characterized by physical methods and X-ray crystallography. It crystallizes in space group with a = 14.623(2), c = 32.682(3) Å, Z = 6. Final refinement of the structure gave R = 0.042 and Rw = 0.132 . The crystal structure of Nd(III) cryptate shows a tricapped prismatic structure with coordination number nine.

Keywords:

• Neodymium
• Cryptate
• Crystal structure
• ES-MS

Acknowledgements

This work was supported by the National Natural Science Foundation of China.

Notes

^aSymmetry transformations used to generate equivalent atoms are i: is 1 − y, x − y, z (N2A, N3A); ii: 1 − x + y, 1 − x, z (N2B, N3B); iii: 1/3 + y, −1/3 + x, 1/6 − z (N2C, N1A); iv: 1/3 + x − y, 2/3 − y, 1/6 − z (N2D); v: 4/3 − x, 2/3 − x + y, 1/6−z (N2E).