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Crystal structure of di (1-n-dodecylpyridine) decahydro-closo-decaborate(2-) (C5H5N-C12H25)2[B10H10]

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Abstract

Using X-ray analysis, we have determined the crystal structure of di(1-n-dodecylpyridine) decahydrocloso-decaborate(2-), (py-C12H25)2[B10H10] (I), a yellow salt-like substance obtained by reaction of (py-C12H25)Br and K2[B10H10] in an aqueous solution. Compound I melts at 1250 without decomposition and luminesces under ultraviolet radiation (λmax=555 nm at 298 K). In I, quaternary pyridine bases, containing a hydrocarbon radical with the C12 chain, are combined with the closo-cluster hydroborate anion [B10H10]2-. This results in a charge transfer structure having shortened nonvalent (equatorial B) H.…H(C of pyridine) contacts of 2.41(8) Å. Crystals I are orthorhombic with a=8.584 (1), b=7.739(1), c=31.183(5) Å, Vcell=2071.4(5) Å3, space group Pnmm, Z=2, dcalc=0.986 g/cm3 (a Syntex P21 automatic diffractometer, λCUKα, Nmsd/used=1654/711, Raniso=0.076, Rw=0.080, w=1/(σ(Fobs)2+0.0007·F 2obs ). Substantial changes are observed in the vibration range of the valent B−H bonds in the IR spectrum of I as compared to that of pure ionic K2[B10H10], confirming the interaction.

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Authors
  1. A. V. Virovets
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  2. N. N. Vakulenko
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  3. V. V. Volkov
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  4. N. V. Podberezskaya
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Additional information

Institute of Inorganic Chemistry, Siberian Branch, Sussian Academy of Sciences. Novosibirsk State University. Translated fromZhurnal Strukturnoi Khimii, Vol. 35, No. 3, pp. 72–77, May–June, 1994.

Translated by T. Yudanova

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Virovets, A.V., Vakulenko, N.N., Volkov, V.V. et al. Crystal structure of di (1-n-dodecylpyridine) decahydro-closo-decaborate(2-) (C5H5N-C12H25)2[B10H10]. J Struct Chem 35, 339–344 (1994). https://doi.org/10.1007/BF02578286

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  • DOI: https://doi.org/10.1007/BF02578286

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