
%0 Journal Article
%A Deacon, GB 
%A Gatehouse, BM 
%A Nickel, S 
%A Platts, SN 
%T Organoamido- and Aryloxo-lanthanoids. III. Preparation and X-Ray Structure of Bis(&#956;-3,5-dimethylpyrazolato-N:N&#8242;)bis(&#956;-tetrahydrofuran-O)-bis[bis(&#951;<sup>2</sup>-3,5-dimethylpyrazolato-N,N')neodymium(III)]
%J Australian Journal of Chemistry
%D 1991/04/01
%V 44
%N 4
%P 613-621
%K 
%R https://doi.org/10.1071/CH9910613
%U https://www.publish.csiro.au/paper/CH9910613 
%X Reaction of neodymium metal with bis ( pentafluorophenyl )mercury and pyrazole ( Hpz ) or 3,5-dimethylpyrazole ( Hdmpz ) in tetrahydrofuran ( thf ) yields Nd ( pz )3 or [ Nd ( dmpz )3( thf )]2. X-Ray crystallography has shown that [Nd (dmpz )3( thf )]2 [triclinic, space group P&#299; (No. 2), a 11.070(4), b 11.364(3), c 10.867(2)&#506;, &#945; 103.00(1), &#946; 120.78(3), &#947; 97.68(2)&#176;, R 0.0235, Rw 0.0247 for 5575 observed reflections] has a novel centrosymmetric  dimeric structure. Each neodymium is eight-coordinate (4,4 bicapped trigonal prism) with two terminal chelating dmpz  ligands [ Nd -N 2.400(2), 2.413(3), 2.422(3), 2.426(3)&#506;], two bridging dmpz ligands [ Nd -N 2.509(2), 2.511(2)&#506;], and, unexpectedly, two bridging tetrahydrofuran ligands [ Nd -O 2.792(2), 2.757(2)&#506;]. 
