
TY  - JOUR
A1  - Roberts, GL 
A1  - Skelton, BW 
A1  - White, AH 
A1  - Wild, SB 
T1  - Synthesis of Bis(6-methylquinolin-8-yl)phenylarsine and tris(6-methylquinolin-8-yl)-arsine and certain of their bivalent palladium and zerovalent molybdenum complexes. Crystal and molecular structures of Dichloro- and Diiodo-[bis(6-methylquinolin-8-yl)phenylarsine]palladium(II)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1982
VL  - 35
IS  - 11
SP  - 2193
EP  - 2201
KW  - 
UR  - https://doi.org/10.1071/CH9822193 
N2  - The potentially tridentate chelating agent bis(6-methylquinolin-8-yl)phenylarsine (AsN2) and quadridentate tris(6-methylquinolin-8-yl)arsine (AsN2) have been prepared from 6-methyl-8-lithio-quinoline and dichlorophenylarsine or arsenic trichloride, respectively. Both ligands behave as bidentates in complexes of the type [PdX2(AsN2)] and [PdX2(AsN2)] (where X = Cl or I) and as tridentates in [Mo(CO)3(AsN2)] and [Mo(CO)3(AsN2)]. The crystal and molecular structures of [PdCl2(AsN2)],CH2Cl2 and [PdI2(AsN2)] have been determined by single-crystal X-ray analysis. The dichloro complex crystallizes in space group P1 (Ci1; No.2) with a 9.963(3), b 8.555(3), c 16.102(7) Å; &#945; 86.64(3), &#946; 82.13(3), &#947; 85.84(3)º; U 1354.3(9) Å3 and Z = 2. The structure was solved by heavy-atom methods and refined by least squares to R 0.044 for 2530 'observed' reflections with 1>3&#963;(I). The coordination geometry of the palladium(II) atom is pseudo-square-planar in which the potentially tridentate AsN2 is behaving as a bidentate only. There is no evidence of interaction of the remaining 6-methylquinolin-8-yl group with the metal centre, although a weak interaction between the solvent of crystallization and the metal may be present. The diiodo complex similarly crystallizes in the centrosymmetric triclinic space group P1 (Cil ; No.2) with a 13.590(5), b 10.035(2), c 9.435(2) Å; &#945; 102.68(2), &#946; 90.10(2), &#947; 92.99(2)º; U 1253.5(6) Å3 and Z = 2. Least- squares refinement led to a convergence with R 0.038 for 3461 'observed' reflections. The structure of this complex was similar to that of the dichloro analogue. 
ER  -

