
TY  - JOUR
A1  - Deacon, GB 
A1  - Gatehouse, BM 
A1  - Nickel, S 
A1  - Platts, SN 
T1  - 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)]
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1991
VL  - 44
IS  - 4
SP  - 613
EP  - 621
KW  - 
UR  - https://doi.org/10.1071/CH9910613 
N2  - 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;]. 
ER  -

