Organization of the Cavity in a Bipyridyl Crown Ether Through Coordination with PdCl₂

In the crystal structure of dichloro[3,6,9,12,15,18-hexaoxa-24,27-diazatricyclo[24.4.0.0^20,25]- triaconta-1(26),20,22,24,27,29-hexaene-N,N']palladium(II), [PdCl₂(C₂₂H₃₀N₂O₆)], the Pd atom is tetracoordinated by the two pyridyl N atoms and two Cl atoms. The planes formed by atoms Pd1, N21, N31 and atoms Pd1, Cl1, Cl2 make an angle of 12.12 (9)° with one another. The twist of the two pyridyl rings of 31.59 (9)° is associated with the ortho substitution, and the complexation of PdCl₂ seems to alter the shape of the crown ether cavity, so that it is less suitable for complexing metal cations.

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