
TY  - JOUR
A1  - Kepert, Cameron J. 
A1  - Semenova, Lioubov I. 
A1  - Wei-Min, Lu 
A1  - Skelton, Brian W. 
A1  - White, Allan H. 
T1  - Structural Systematics of Rare Earth Complexes. XII Solvated 1 : 1 Adducts of Some Lanthanoid(<emph type="6">III</emph>) Carboxylates with 1,10-Phenanthroline and 2,2&#8242;:6&#8242;,2&Prime;-Terpyridine
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1999
VL  - 52
IS  - 6
SP  - 481
EP  - 496
KW  - 
UR  - https://doi.org/10.1071/CH98043 
N2  - A room-temperature single-crystal X-ray structure determination of the 1 : 1 adduct of 1,10-phenanthroline (&grave;phen&quot;) with lutetium(III) acetate (as its dihydrate) is recorded. Crystals are triclinic, P 1, a 12&#183;430(8), b 10&#183;681(4), c 8&#183;134(8) &#197;, &#945; 74&#183;76(6), &#946; 84&#183;81(7), &#947; 74&#183;29(4)&#176;, Z = 2 f.u.; conventional R on &#124;F&#124; was 0&#183;031 for No 3939 independent &#8216;observed&#8217; (I &#62; 3&#963;(I)) diffractometer reflections. The complex &#91;(N,N&#8242;-phen)(O,O&#8242;-ac)Lu(O-ac-O&#8242;)4Lu(O,O&#8242;-ac)(N,N&#8242;-phen)&#93;.2H2O is binuclear, the lutetium being eight-coordinated by bidentate phen and ac (acetate) ligands and four oxygen atoms from the bridging acetate ligands. Also recorded is the structural characterization of 1 : 1 Lu(ac)2Cl/tpy (tpy = 2,2&#8242;:6&#8242;,2&Prime;-terpyridine) as its pentahydrate; this complex is triclinic, P 1, a 12&#183;410(3), b 11&#183;559(4), c 9&#183;976(4) &#197;, &#945; 85&#183;19(3), &#946; 70&#183;30(3), &#947; 65&#183;70(2)&#176;, Z = 2, R 0&#183;049 for No 4717. The complex is shown to be &#91;(tpy)(H2O)2Lu(O2CCH3)2&#93;Cl.3H2O, with the lutetium nine-coordinated by tridentate tpy, a pair of bidentate acetates and two unidentate water molecules, with the chloride uncoordinated. Structural characterizations of a number of 1 : 1 adducts of variously solvated lanthanoid(III) trichloroacetates, Ln(tca)3, with tpy are also recorded. Yb(tca)3/tpy/MeOH (1 : 1 : 1) is triclinic, P 1, a 14&#183;016(4), b 12&#183;951(5), c 9&#183;604(3) &#197;, &#945; 73&#183;89(3), &#946; 76&#183;56(3), &#947; 69&#183;20(3)&#176;, Z = 2 f.u., R 0&#183;057 for No 4465. The complex is mononuclear, the eight-coordinate N3YbO5 array containing tridentate tpy, unidentate methanol, and two unidentate and one bidentate chelating anions. 1 : 1 : 1 Ln(tca)3/tpy/OH2 adducts for Ln = La(-)Nd are triclinic, P 1, a &#x2248; 13&#183;4, b &#x2248; 12&#183;47, c &#x2248; 11&#183;5 &#197;, &#945; &#x2248; 114&#183;5, &#946; &#x2248; 89&#183;9, &#947; &#x2248; 115&#183;6&#176;, Z = 1 binuclear array, R 0&#183;061, 0&#183;071 for No 3240, 2394. The two Ln atoms are O,O&#8242;-bridged by a pair of anions, the N3LnO6 nine-coordinate lanthanoid environment being completed by a tridentate tpy, one water, one unidentate and one bidentate anion. A 1 : 1 : 1 Lu(tca)3/tpy/OH2 array, by contrast, is triclinic, P 1, a 16&#183;569(8), b 14&#183;815(5), c 14&#183;375(6) &#197;, &#945; 62&#183;05(3), &#946; 81&#183;35(4), &#947; 77&#183;97(3)&#176;, Z = 4 &#8216;mononuclear&#8217; f.u., R 0&#183;067 for No 6710. The array, remarkably, contains species of both of the above types in a 1 : 2 binuclear-to-mononuclear ratio, but with water replacing methanol in the mononuclear array. 
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