ISSN:
1600-5759
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The title compound (1), 1-[(μ-Cl)2Li(TMEDA)]-2,2′,4,4′-(SiMe3)4-5,5′,6,6′-[(μ-H)4Ho(TMEDA)(μ-Cl)2Li(TMEDA)]-1,1′-commo-Ho(2,4-C2B4H4)2.C10H8 (where TMEDA is tetramethylethylenediamine, bis[μ-2κ2HB5,HB6: 3(2,3,4,5,6-η)-2,4-bis(trimethylsilyl)-2,4-dicarba-nido-hexaborate(6)]tetra-μ-chloro-1:2κ4Cl;3:4κ4Cl-tris(N,N,N′,N′ -tetramethyl-1,2-ethanediamine)-1κ2N,N′;2κ2N,N′;4κ2N,N′-1,4- dilithium-2,3-diholmium naphthalene solvate, crystallizes in the triclinic space group P\overline{1}. The cluster consists of a HoIII `carbons apart' carborane bent-sandwich complex bridging almost symmetrically to an exo-polyhedral Li(TMEDA) unit via two Cl atoms and, via two B-H(terminal) groups of each opposing C2B3 face, to an exo-polyhedral HoIII(TMEDA) unit that is also linked to another exo-polyhedral Li(TMEDA) group with two Ho-Cl-Li bridges. The centrally located Ho atom is almost symmetrically bonded to two opposing `carbons apart' C2B4 carborane cages with Ho1...Cnt1 2.340, Ho1...Cnt2 2.349Å, Cnt1...Ho1...Cnt2 130.2, Cnt1...Ho1...Cl1 107.1, Cnt1...Ho1...Cl2 107.1, Cnt2...Ho1...Cl1 109.1, and Cnt2...Ho1...Cl2 109.1°, where Cnt is the centroid of the C2B3 face of each.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0108270195010110