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Di-μ-acetato-bis[triaquabis(thiocyanato-κN)(4-methylpyridine N-oxide-κO)samarium(III)]

✍ Scribed by Zhang, Shi-Guo ;Shi, Jing-Min

Publisher: International Union of Crystallography
Year: 2007
Tongue: English
Weight: 668 KB
Volume: 63
Category: Article
ISSN: 1600-5368
DOI: 10.1107/s1600536807025561

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✦ Synopsis

In the title binuclear complex, [Sm 2 (-C 2 H 3 O 2 ) 2 (NCS) 4 -(C 6 H 7 NO) 2 (H 2 O) 6 ], which possesses a crystallographically imposed centre of symmetry, four thiocyanate, two 4-methylpyridine N-oxide and six water molecules function as terminal ligands, whereas two acetate anions bridge the two Sm III ions. The crystal packing exhibits an extensive three-dimensional network of intermolecular O-HÁ Á ÁS and O-HÁ Á ÁO hydrogen bonds. Related literature For the crystal structures of related complexes, see: Panagiotopoulos et al. (1995); Zhang et al. (2006).

Experimental

Crystal data [Sm 2 (C 2 H 3 O 2 ) 2 (NCS) 4 (C 6 H 7 NO) 2 -(H 2 O) 6 ] M r = 977.46 Monoclinic, P2 1 =n a = 9.0451 (12) A b = 15.997 (2) A c = 12.1753 (16) A ˚ = 100.910 (2) V = 1729.9 (4) A ˚3 Z = 2 Mo K radiation = 3.66 mm À1 T = 298 (2) K 0.26 Â 0.11 Â 0.09 mm Data collection Bruker SMART APEX CCD areadetector diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 1996) T min = 0.449, T max = 0.734 10164 measured reflections 3736 independent reflections 3447 reflections with I > 2(I) R int = 0.027 Refinement R[F 2 > 2(F 2 )] = 0.028 wR(F 2 ) = 0.068 S = 1.06 3736 reflections 201 parameters

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