Syntheses and Crystal Structures of Benzyl-and Cyclopentyl-Cyclopentadienyl Sodium Tetrahydrofuranate Complexes

Abstract

Abstract: The present paper covers syntheses and crystal structures of benzyl- and cy-clopentyl-cyclopentadienyl sodium tetrahydrofuranate complexes C₆H₅CH₂C₅H₄Na·THF (1) and C₅H₉C₅H₄Na°THF (2). X-ray diffraction data of the title compounds were collected at a low temperature (about 210K). Structures of both the crystals belong to monoclinic space group P2₁/n with α=0. 9316(3) nm, b=1. 5161(4) nm, c=0.9791(3) nm, β=91. 06(3)°Z=4 for (1) and α=1. 6120(7) nm, b=0. 9370(3) nm, c=1. 8475(7) nm, β=109.52(3)°Z =8 for (2). Both structures were solved by using direct methods and refined by block-matrix least-squares to final values of R =0. 044 for 520 observed reflections (1) and R =0. 067 for 921 observed reflections (2). In the crystals the tetrahydrofuranate complexes C₆H₅CH₂C₅H₄Na·THF and C₅H₉C₅H₄Na·THF adopt a puckered chain structure with η⁵-(C₆H₅CH₂)C₅H₄ and η⁵-(C₅H₉)C₅H₄ rings connected by a bridge Na (THF) unit.

Key words: Benzylcyclopentadiene, Cyclopentylcyclopentadiene, Cyclopen-tadienylsodium, Synthsis, Crystal structure

Zhang Bin, Jin Zhongsheng, Wang Yuling, Wei Gecheng, Chen Wenqi. Syntheses and Crystal Structures of Benzyl-and Cyclopentyl-Cyclopentadienyl Sodium Tetrahydrofuranate Complexes[J]. Chemical Research in Chinese Universities, 1992, 8(1): 15-20.

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Syntheses and Crystal Structures of Benzyl-and Cyclopentyl-Cyclopentadienyl Sodium Tetrahydrofuranate Complexes

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