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Coordination Chemistry of Methylmercury(II) with Flexible Tripod Ligands Containing Pyridyl and N-Methylimidazolyl Groups, Including the Crystal Structure of [Bis(N-methylimidazol-2-y1)(pyridin-2-yl)methanol-N,N',N']methylmercury(II) Nitrate, [MeHg(py(N-MeIm)2COH)]N03

journal contribution
posted on 2023-05-26, 16:09 authored by Canty, AJ, Patrick, JM, White, AH
The ligand is present as a tridentate, based on one strong Hg-N(1') (N-MeIm) bond, 2.12 (1) A, and two weak Hg...N interactions of 2.58 (1) A (N-MeIm) and 2.89 (1) A (py). As expected for the presence of weak Hg...N interactions, the C(1)-Hg-N(1') angle is not far removed from linearity, 170.5(7)O, with the Hg...N interactions opposite this angle. Although the weak interactions are well short of van der Waals contact (ca. 3.23 A), they are clearly weak since the mercury atom lies 1.589 A above the mean plane of the N-MeIm ring and 0.456 A above the mean plane of the pyridine ring, compared with 0.304 A for the strongly bound N-MeIm ring. Although the hydroxyl hydrogen could not be confidently located, a close contact is observed to the nitrate ion, 0-(H)...O(1) being 2.71 (1) A; no other 0...O distances <3.2 A were observed.

History

Publication title

Inorganic Chemistry

Volume

23

Article number

23

Number

23

Pagination

3827-3830

ISSN

0020-1669

Publication status

  • Published

Repository Status

  • Restricted

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