
%0 Journal Article
%A Hughes, CM 
%A Favas, MC 
%A Skelton, BW 
%A White, AH 
%T Crystal Structures of the 1:1 Adducts of <i>N,N,N&#8242;,N&#8242;</i>- Tetramethyl-o-phenylenediamine with Zinc(II) Bromide and Mercury(II) Bromide and Iodide
%J Australian Journal of Chemistry
%D 1985/10/01
%V 38
%N 10
%P 1521-1527
%K 
%R https://doi.org/10.1071/CH9851521
%U https://www.publish.csiro.au/paper/CH9851521 
%X The 1:1 adducts of o-Me2N.C6H4.NMe2 (&#8801; L&#8243;) with ZnI2, HgBr2 and HgI2 are isomorphous and their crystal structures have been established by single-crystal X-ray diffraction methods, being refined to residuals of 0.045, 0.050, 0.035, for 1759, 1617, 1911 'observed' reflections respectively. Crystals are monoclinic P21/c,Z = 4, with a ~ 8.5, b ~ 21, c ~ 8 &#506;, &#946; ~ 95&#176;. In L&#8243;ZnI2, {Zn-I} is 2.538, {Zn-N} 2.09 &#506;, with I-Zn-I 115.36(6), N-Zn-N 84.6(3), and I-Zn-N 108.3(2)-118.3(2)&#176;. In L&#8243;HgBr2, (Hg-Br) is 2.523, {Hg-N} 2.42 &#506;, with Br-Hg-Br 123.04(8), N-Hg-N 73.2(4) and Br-Hg-N 98.9(3)-131.2(3)&#176;. In L&#8243;HgI2, {Hg-I} is 2.661, {Hg-N} 2.44 &#506;, with I-Hg-I 128.92 (3), N-Hg-N 72.8(3), and I-Hg-N 101.8(2)- 122.9(2). X-Hg-X angles are unexpectedly small and this is attributed to incipient dimer formation through an inversion centre, this tendency being greatest in (2) where the Hg&#8230;Br approach is 3.456(3) &#506; and the immediate HgBr2N environment of the mercury is trigonal planar. 
