
%0 Journal Article
%A Skelton, BW 
%A Waters, AF 
%A White, AH 
%T Synthesis and Structural Systematics of Nitrogen Base Adducts of Group 2 Salts. IX. Some Complexes of Group 2 Metal Halides With 2,2':6',2"-Terpyridine
%J Australian Journal of Chemistry
%D 1996/01/01
%V 49
%N 1
%P 137-146
%K 
%R https://doi.org/10.1071/CH9960137
%U https://www.publish.csiro.au/paper/CH9960137 
%X Syntheses and room-temperature single-crystal X-ray structure determinations are recorded for a number of adducts of MX2.ntpy stoichiometry of salts of Group 2 metals, MX2, with 2,2':6',2"-terpyridine ( tpy ). ' Homoleptic' adducts, [M( tpy )3] X2, are found in space groups with trigonal symmetry, with M located on a site of at least 3 symmetry, the structures being derivative of the P 62c array found in [ Pb ( tpy )3] (ClO4)2, but with variations in anion and cation stackings . [M( tpy )3] I2.~1.7MeOH, M = Ca (1), Sr (2), are trigonal , P3c1, a &#8776; 13, c &#8776; 15.3 &#506;, Z = 2 f.u., conventional R on &#1472; F &#1472; being 0.050, 0.086 for No 894, 865 independent 'observed' (I > 3&#963;(I)) reflections respectively. [ Sr ( tpy )3] Br2.2MeOH (3), although similar, is modelled in space group P3c1, a 13.040(4), c 15.13(1) &#506;, Z = 2 f.u ., R 0.041 for No 447. [( tpy )2BaI2] (4) is monoclinic, P 21/c, a 10.812(4), b 16.740(5), c 17.458(4) &#506;, &#946; 109.39(2)&#176;, Z = 4 f.u ., R 0.042 for No 3256. [( tpy )2Ba(O2ClO2)2] (5) is triclinic, P&#299; , a 14.220(4), b 11.212(2), c 10.511(2) &#506;, &#945; 65.66(2), &#946; 87.32(2), &#947; 88.92(2)&#176;, Z = 2 f.u ., R 0.029 for No 4676. 
