Bis(μ-2-{bis­[(2-oxidobenzyl­idene)amino]­meth­yl}phenolato)bis­[(tetra­hydro­furan)­samarium(III)] tetra­hydro­furan disolvate

Li, L.; Zhou, Y.; Yuan, F.

doi:10.1107/S1600536812015759

Volume 68
Part 5
Pages m603-m604
May 2012

Received 22 March 2012
Accepted 11 April 2012
Online 18 April 2012

Key indicators
Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.008 Å
Disorder in main residue
R = 0.032
wR = 0.084
Data-to-parameter ratio = 17.8
Details

Bis(-2-{bis[(2-oxidobenzylidene)amino]methyl}phenolato)bis[(tetrahydrofuran)samarium(III)] tetrahydrofuran disolvate

Li Li,^a Yuan Zhou ^a and Fugen Yuan ^a ^*

^aSchool of Chemistry and Biochemistry, University of Science and Technology of Suzhou, Suzhou 215009, People's Republic of China
Correspondence e-mail: yuanfugensuzhou@163.com

In the centrosymmetric binuclear complex of the title solvate, [Sm₂(C₂₁H₁₅N₂O₃)₂(C₄H₈O)₂]·2C₄H₈O, the Sm^III is coordinated in a distorted monocapped octahedral geometry by four O atoms and two N atoms from two tridentate deprotonated 2-{bis[(2-oxidobenzylidene)amino]methyl}phenolate ligands and an O atom of a tetrahydrofuran (THF) molecule. The SmSm distance in the complex is 3.8057 (4) Å. Parts of the coordinating THF molecule are disordered over two sets of sites in a 0.56 (3):0.44 (3) ratio. The complex and solvent molecules are linked into a three-dimensional structure via C-HO hydrogen-bonding interactions.

Related literature

For general reports on the tripodal ligand 2-bis-(salicylidieneamino)methylphenol, see: Nabulsi et al. (1988); Achim et al. (2001); Yu et al. (1991); Snyder et al.(1989); Chaudhuri et al. (1998); Illingsworth et al. (2002). For related structures, see: Howell et al. (1998); Liu et al. (1998); Dubé et al. (1998). For ionic radii, see: Shannon (1976).

Experimental

Crystal data

[Sm₂(C₂₁H₁₅N₂O₃)₂(C₄H₈O)₂]·2C₄H₈O
M_r = 1275.84
Monoclinic, P 2₁ /c
a = 11.7184 (11) Å
b = 21.378 (2) Å
c = 11.1464 (11) Å
= 99.058 (1)°
V = 2757.5 (5) Å³
Z = 2
Mo K radiation
= 2.17 mm^-1
T = 293 K
0.23 × 0.18 × 0.16 mm

Data collection

Rigaku Rapid I CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2007) T_min = 0.635, T_max = 0.723
23697 measured reflections
6291 independent reflections
5362 reflections with I > 2(I)
R_int = 0.052

Refinement

R[F² > 2(F²)] = 0.032
wR(F²) = 0.084
S = 1.01
6291 reflections
353 parameters
42 restraints
H-atom parameters constrained
_max = 0.62 e Å^-3
_min = -0.49 e Å^-3

Table 1
Hydrogen-bond geometry (Å, °)

D-HA	D-H	HA	DA	D-HA
C4-H4AO5	0.93	2.56	3.450 (7)	159
C21-H21AO5ⁱ	0.93	2.56	3.424 (6)	155
C22-H22BO3ⁱⁱ	0.97	2.50	3.079 (6)	118
Symmetry codes: (i) $[x, -y+{\script{1\over 2}}, z+{\script{1\over 2}}]$ ; (ii) -x+1, -y, -z.

Data collection: CrystalClear (Rigaku, 2004); cell refinement: CrystalClear; data reduction: CrystalStructure (Rigaku/MSC, 2004); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: publCIF (Westrip, 2010) and PLATON (Spek, 2009).

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: WM2610 ).

Acknowledgements

Financial support from the Jiangsu Key Laboratory for Environment Functional Materials and from a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) is gratefully acknowledged.

References

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