Crystal and Molecular Structure of (3,3'-Dimethyl-2,2'-bipyridyl)methylmercury(II) Nitrate; a Complex That May Have Weak Intramolecular pi-Coordination

The structure of the methylmercury complex of 3,3'-dimethyl-2,2'-bipyridyl(L), [MeHg(L)]NO3, was solved by Patterson and Fourier techniques using 1560 counter-measured observed reflections and refined by the full-matrix least-squares method to R = 0,061. The complex has a bent C(1)-Hg-N(1) group [172,7(5)] with Hg-C(1) 2,01(1) and Hg-N(1) 2,11(1) A, weak interaction between mercury and nitrate oxygen atoms, and evidence suggesting the presence of a weak intramolecular-interaction between mercury and the second pyridyl ring, with Hg-C(2') 3,11(1), Hg-N(l') 3,29(1) A and an angle of 100,5 between the planes of the pyridyl rings.