
Journal of the Chemical Society, Dalton Transactions p. 3161 - 3168 (1990)
Update date:2022-08-04
Topics:
Edwards, Dennis A.
Mahon, Mary F.
Martin, William R.
Molloy, Kieran C.
Fanwick, Phillip E.
Walton, Richard A.
Reactions of equimolar ratios of MnX2*4H2O (X = Cl or Br) and the tridentate ligands 2,6-bis<1-(phenylimino)ethyl>pyridine (L1) or 2,6-bis<1-(4-methoxyphenylimino)ethyl>pyridine (L2) afford the five-co-ordinate complexes a = 8.761(3), b = 17.032(5), c = 17.453(5) Angstroem, and Z = 4.The distorted trigonal-bipyramidal geometry around manganese involves a trigonal plane with angles close to 120 deg comprising both bromines and the pyridyl nitrogen of L1.However, strain induced by this ligand reduces the axial NMnN angle to 142.8 deg.The Mn-N(pyridyl) bond is markedly shorter than the axial Mn-N(imino) bonds.For comparison, the structure of a = 8.977(3), b = 12.585(5), c = 22.297(6), α = 90.99(3), β = 98.27(2), γ = 94.33(3) deg, and Z = 4.The two independent molecules of a meridional manner.
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