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Experimental Section
All chemicals and solvents used were of regent grade and were
used without further purification unless stated otherwise. Tet-
rahydrofuran was distilled from sodium.
Preparation of 1
The ligand was prepared by a previously reported method.[18]
Preparation of 2
The ligand 1 (0.322 g, 1.52 mmol) was dissolved in EtOH
(5 mL) and to it was added manganese dichloride (0.180 g,
0.76 mmol) dissolved in EtOH (2 mL). The mixture was stirred
at 508C for 0.5 h. The precipitate was filtered, washed with
ethanol, and air-dried to give 2 as a yellow powder, yield:
0.361 g (88%).
Single crystals suitable for data collection were obtained by
slow evaporation of the solvent from an ethanol saturated sol-
ution at room temperature.
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Crystal Data for Complex 2
C26H24Cl2MnN4O2, M¼550.33, orthorhombic, a¼13.388(2),
b¼9.5559(17), c¼19.716(4) ꢁ, U¼2522.3(8) ꢁ3, T¼294 K,
space group Pbcn, Z¼4, l (Mo-Ka)¼0.767 mmꢀ1, 15931 re-
flections collection, 2915 independent reflections (Rint¼
0.0402). The final R indices [I>2s (I)]: R1¼0.0351, wR2¼
0.1040, R indices (all data): R1¼0.0545, wR2¼0.1193. The
crystal information file of the complex has been deposited at
the Cambridge Crystallographic Data Centre with a deposition
number CCDC 221760. Copies of the data can be obtained free
of charge on application to CCDC, 12 Union Road, Cambridge
CB2 1EZ, UK [Fax: int. codeþ44(1223)336-033; E-mail: de-
posit@ccdc.cam.ac.uk].
Acknowledgements
We thank the University Grants Committee Areas of Excellence
Scheme in Hong Kong (AOE P/10–01) and The Hong Kong Poly-
technic University ASD Fund for financial support of this study.
References and Notes
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Adv. Synth. Catal. 2005, 347, 45–49