
%0 Journal Article
%A Harrowfield, JM 
%A Miyamae, H 
%A Skelton, BW 
%A Soudi, AA 
%A White, AH 
%T Lewis-Base Adducts of Lead(II) Compounds. XV. Synthesis and Structure of Some Adducts of Bis(2-pyridyl)amine With Lead(II) Salts
%J Australian Journal of Chemistry
%D 1996/10/01
%V 49
%N 10
%P 1121-1125
%K 
%R https://doi.org/10.1071/CH9961121
%U https://www.publish.csiro.au/paper/CH9961121 
%X Several complexes of bis(2-pyridyl)amine ('dpa') with lead(II) salts have been synthesized and subjected to room-temperature single-crystal X-ray studies. 1:1 Adducts have been obtained with lead(II) bromide and iodide. They have similar unit cells, also similar to those of a variety of other N,N&#8242;-heteroaromatic bidentate ligand adducts with metal(II) halides, and the C2/c cell described elsewhere in this series may be regarded as archetypical. [(dpa)PbBr2](&#8734;|&#8734;) is monoclinic, P21/a, a 9.791(4), b 9.720(4), c 16.498(4) &#506;, &#946; 95.96(4)&#8242;, Z = 4 f.u.; conventional R on |F| at convergence was 0.066 for No = 2717 'observed' (I > 3&#963;(I)) reflections. [(dpa)PbI2](&#8734;|&#8734;) is monoclinic, P21/c, a 8.299(2), b 10.229(3), c 16.905(5) &#506;, &#946; 101.47(2)&#176;, Z = 4 f.u.; R was 0.044 for No 2140. Both complexes, like their 2,2'-bipyridine and 1,10-phenanthroline analogues, are linear polymers with six-coordinate (cis-N2)Pb(&#956;-X)4 environments linked in infinite ... (&#956;-X)2Pb(&#956;-X)2&#8230; one-dimensional chains, and with dpa being bidentate. A 2:1 adduct of bis(2-pyridyl)amine with lead(II) acetate ('Pb(ac)2') is also described. [(dpa)2Pb(ac)2](&#8734;|&#8734;) is monoclinic, C 2/c, a 28.835(5), b 10.868(3), c 7.665(2) &#506;, &#946; 94.21(2)&#176;, Z = 4; R was 0.029 for No 1854. The complex is a linear polymer along c; the lead atom lies on a crystallographic twofold axis with a coordination environment comprising a pair of symmetry-related dpa ligands, in this case unidentate (Pb-N 3.092(6) &#506;), and a pair of symmetry-related bidentate acetate ligands (Pb-O 2.465(4) and 2.568(5) &#506;) with the first oxygen atom performing an additional bridging function to adjacent symmetry-related lead atoms (Pb-O 2.663(4)&#506;). 
