Chlorido{5,5′-dimeth­oxy-2,2′-[1,2-phenyl­enebis(nitrilo­methyl­idyne)]diphenolato-κ4O,N,N′,O′}manganese(III)

Eltayeb, N.E.; Teoh, S.G.; Chantrapromma, S.; Fun, H.-K.; Adnan, R.

doi:10.1107/S1600536808009835

Volume 64
Part 5
Pages m670-m671
May 2008

Received 8 April 2008
Accepted 10 April 2008
Online 16 April 2008

Key indicators
Single-crystal X-ray study
T = 296 K
Mean (C-C) = 0.003 Å
R = 0.039
wR = 0.096
Data-to-parameter ratio = 21.2
Details

Chlorido{5,5'-dimethoxy-2,2'-[1,2-phenylenebis(nitrilomethylidyne)]diphenolato-⁴O,N,N',O'}manganese(III)

Naser Eltaher Eltayeb,^a ⁺ Siang Guan Teoh,^a Suchada Chantrapromma,^b ⁺⁺ Hoong-Kun Fun ^c ^* and Rohana Adnan ^a

^aSchool of Chemical Science, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia,^bDepartment of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand, and ^cX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
Correspondence e-mail: hkfun@usm.my

In the title complex, [Mn(C₂₂H₁₈N₂O₄)Cl], the Mn^III centre is in a distorted square-pyramidal configuration, with the basal plane formed by the N₂O₂ donors of the tetradentate Schiff base dianion; the two phenolate O atoms and the two imine N atoms are each mutually cis. The chloride ion occupies the apical position. The dihedral angle between the two outer phenolate rings of the tetradentate Schiff base ligand is 16.44 (9)°. The central benzene ring makes dihedral angles of 10.64 (9) and 25.17 (10)° with the two outer phenolate rings. In the crystal structure, weak C-HO and C-HCl interactions link the molecules into wave-like face-to-face double layers along the c direction. A [pi] - [pi] interaction involving the two outer phenolate rings is observed, the centroid-centroid distance being 3.743 (11) Å.

Related literature

For values of bond lengths, see: Allen et al. (1987). For details of ring conformations, see: Cremer & Pople (1975). For related structures, see, for example: Eltayeb et al. (2008a,b); Habibi et al. (2007); Mitra et al. (2006). For the background to applications of manganese complexes, see, for example: Dixit & Srinivasan (1988); Glatzel et al. (2004); Lu et al. (2006).

Experimental

Crystal data

[Mn(C₂₂H₁₈N₂O₄)Cl]
M_r = 464.77
Orthorhombic, P b c a
a = 13.7282 (2) Å
b = 15.0250 (2) Å
c = 19.2094 (3) Å
V = 3962.25 (10) Å³
Z = 8
Mo K radiation
= 0.83 mm^-1
T = 296 (2) K
0.44 × 0.42 × 0.11 mm

Data collection

Bruker SMART APEXII CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2005) T_min = 0.708, T_max = 0.915
28689 measured reflections
5780 independent reflections
4072 reflections with I > 2(I)
R_int = 0.032

Refinement

R[F² > 2(F²)] = 0.038
wR(F²) = 0.095
S = 1.05
5780 reflections
273 parameters
H-atom parameters constrained
_max = 0.30 e Å^-3
_min = -0.34 e Å^-3

Table 1
Hydrogen-bond geometry (Å, °)

D-HA	D-H	HA	DA	D-HA
C7-H7ACl1ⁱ	0.93	2.81	3.7156 (19)	165
C21-H21AO2ⁱⁱ	0.96	2.44	3.321 (2)	152
Symmetry codes: (i) $[x-{\script{1\over 2}}, -y+{\script{1\over 2}}, -z+1]$ ; (ii) $[x-{\script{1\over 2}}, y, -z+{\script{1\over 2}}]$ .

Data collection: APEX2 (Bruker, 2005); cell refinement: APEX2; data reduction: SAINT (Bruker, 2005); 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: SHELXTL and PLATON (Spek, 2003).

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: IS2286 ).

Acknowledgements

The authors thank the Malaysian Government, Ministry of Science, Technology and Innovation (MOSTI), and the Universiti Sains Malaysia for the E-Science Fund, RU research grant (Nos. PKIMIA/613308, PKIMIA/815002, 203/PKIMIA/671083) and facilities. The International University of Africa (Sudan) is acknowledged for providing study leave to NEE. The authors also thank Universiti Sains Malaysia for the Fundamental Research Grant Scheme (FRGS) (grant No. 203/PFIZIK/671064).

References

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