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A.","year":"1977","journal-title":"Inorg. Chem."},{"key":"ic048770pb00016\/ic048770pb00016_1","doi-asserted-by":"crossref","first-page":"3313","DOI":"10.1021\/ja00452a020","volume":"99","author":"Corbett J. D.","year":"1977","journal-title":"J. Am. Chem. Soc."},{"key":"ic048770pb00017\/ic048770pb00017_1","doi-asserted-by":"crossref","first-page":"1535","DOI":"10.1021\/ic00230a006","volume":"25","author":"Wilson W. L.","year":"1986","journal-title":"Inorg. Chem."},{"key":"ic048770pb00019\/ic048770pb00019_1","unstructured":"Details of the structure determination follow:\u2009 A shiny single crystal was sealed in a capillary. X-ray data were collected at 150 K on a Enraf-Nonius KappaCCD at the window of a rotating anode (Nonius, FR591) and graphite monochromated Mo K\u03b1 radiation (\u03bb = 0.71073 \u00c5). The structure was solved by direct methods and refined by least-squares with SHELX-97.19aCrystal data include the following:\u2009 monoclinic, space groupC2\/m,a= 13.3916(3) \u00c5,b= 6.88541(2) \u00c5,c= 15.4889(4) \u00c5, \u03b2 = 102.529(2)\u00b0,V= 1387.83(6) \u00c53;Z= 16; \u03bc = 14.222 cm-1; \u03c1calcd= 4.985 g cm-3. The final refinement of all atoms with anisotropic displacement parameters converged to R1\/wR2(I\u2265 2\u03c3I) = 0.036\/0.086 and R1\/wR2(all data) = 0.037\/0.086 for 1721 reflections and 63 variables; GOF = 1.20. The presence of residual electron density (5 e\/\u00c53at 1.48 \u00c5 from Na(2)) is probably due to some Na disorder. No superstructure was observed, but diffuse scattering contributions are present, indicating incommensurable behavior. (a) Sheldrick, G. 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