Faculty of Chemistry, Nicholas Copernicus University, Gagarina 7, PL-87100 Toruń, Poland.
Magn Reson Chem. 2011 May;49(5):237-41. doi: 10.1002/mrc.2739. Epub 2011 Mar 29.
(1)H, (13)C and (15)N NMR studies of iron(II), ruthenium(II) and osmium(II) bis-chelated cationic complexes with 2,2':6',2″-terpyridine (M(terpy)(2) ; M = Fe, Ru, Os) were performed. Significant shielding of nitrogen-adjacent H(6) and deshielding of H(3'), H(4') protons were observed, both effects being mostly expressed for Fe(II) compounds. The metal-bonded nitrogens were shielded, this effect being much larger for the outer N(1), N(1″) than the inner N(1') atoms, and enhanced in the Fe(II) → Ru(II) → Os(II) series.
（1）H、（13）C 和（15）N NMR 研究了铁（II）、钌（II）和锇（II）与 2,2':6',2″-三联吡啶（[M(terpy)(2)]2+; M = Fe、Ru、Os）的双螯合阳离子配合物。观察到氮相邻的 H(6)的显著屏蔽和 H(3')、H(4')质子的去屏蔽，这两种效应在 Fe(II)化合物中表现得最为明显。金属键合的氮原子被屏蔽，这种效应在外层 N(1)、N(1″)原子上比内层 N(1')原子上大得多，并且在 Fe(II)→Ru(II)→Os(II)系列中增强。
