In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2003, No. 7 ( 2003-04), p. 1388-1393
Abstract:
The series of complexes [M(COT)(L)(HMPA)] {M = Nd or U; COT = η‐C 8 H 8 ; L = η‐C 5 Me 5 (Cp*) or η‐C 4 Me 4 P (tmp), HMPA = OP(NMe 2 ) 3 } have been synthesized. [Nd(COT)(Cp*)(HMPA)] ( 1b ) was prepared by substitution of the THF ligand of [Nd(COT)(Cp*)(THF)]; [Nd(COT)(tmp)(HMPA)] ( 3 ) was prepared by reaction of the neodymium cation [Nd(COT)(THF) 4 ][BPh 4 ] with Ktmp followed by the addition of HMPA to the dimeric compound [Nd(COT)(tmp)] 2 ( 2 ); [U(COT)(Cp*)(HMPA)] ( 4 ) was isolated from the reaction of the uranium cation [U(COT)(HMPA) 3 ][BPh 4 ] with KCp*, and [U(COT)(tmp)(HMPA) 2 ] ( 5 ) was obtained upon reduction of the uranium( IV ) cation of [U(COT)(tmp)(HMPA) 2 ][BPh 4 ] with sodium amalgam. The X‐ray crystal structures of 1b , 3 , and 4 have been determined. In the isostructural compounds 1b and 4 , the differences between the U−C and Nd−C bond lengths are smaller than those predicted from the ionic radii of the trivalent ions; in particular, the average M−C(Cp*) distances are equal to 2.77 Å for both M = Nd and U. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2003:7
DOI:
10.1002/ejic.200390180
Language:
English
Publisher:
Wiley
Publication Date:
2003
detail.hit.zdb_id:
1475009-0
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