Expandability of Ultralong CC Bonds: Largely Different C1C2 bond lengths determined by low-temperature x-ray structural analyses on Pseudopolymorphs of 1,1-Bis(4-fluorophenyl)-2,2-bis(4-methoxyphenyl)pyracene

Takanori Suzuki; Yasuto Uchimura; Fumika Nagasawa; Takashi Takeda; Hidetoshi Kawai; Ryo Katoono; Kenshu Fujiwara; Kei Murakoshi; Takanori Fukushima; Aiichiro Nagaki; Jun Ichi Yoshida

doi:10.1246/cl.130872

Expandability of Ultralong CC Bonds: Largely Different C1C2 bond lengths determined by low-temperature x-ray structural analyses on Pseudopolymorphs of 1,1-Bis(4-fluorophenyl)-2,2-bis(4-methoxyphenyl)pyracene

Takanori Suzuki, Yasuto Uchimura, Fumika Nagasawa, Takashi Takeda, Hidetoshi Kawai, Ryo Katoono, Kenshu Fujiwara, Kei Murakoshi, Takanori Fukushima, Aiichiro Nagaki, Jun Ichi Yoshida

Research output: Contribution to journal › Article › peer-review

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Abstract

Low-temperature X-ray analyses on several pseudopolymorphs (solvate crystals) revealed that the C1C2 bond length of the highly congested title molecule can adopt quite different values [1.700(6)1.739( 6)]. Such an unusual observation indicates that the ultralong covalent bond is endowed with "expandability," thus the prestrained bond can be elongated or shortened very easily accompanied by only a minute change in energy, which can be compensated by intermolecular perturbation in the crystal.

Original language	English
Pages (from-to)	86-88
Number of pages	3
Journal	Chemistry Letters
Volume	43
Issue number	1
DOIs	https://doi.org/10.1246/cl.130872
Publication status	Published - 2014
Externally published	Yes

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Chemistry(all)

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Suzuki, T., Uchimura, Y., Nagasawa, F., Takeda, T., Kawai, H., Katoono, R., Fujiwara, K., Murakoshi, K., Fukushima, T., Nagaki, A., & Yoshida, J. I. (2014). Expandability of Ultralong CC Bonds: Largely Different C1C2 bond lengths determined by low-temperature x-ray structural analyses on Pseudopolymorphs of 1,1-Bis(4-fluorophenyl)-2,2-bis(4-methoxyphenyl)pyracene. Chemistry Letters, 43(1), 86-88. https://doi.org/10.1246/cl.130872

Expandability of Ultralong CC Bonds : Largely Different C1C2 bond lengths determined by low-temperature x-ray structural analyses on Pseudopolymorphs of 1,1-Bis(4-fluorophenyl)-2,2-bis(4-methoxyphenyl)pyracene. / Suzuki, Takanori; Uchimura, Yasuto; Nagasawa, Fumika; Takeda, Takashi; Kawai, Hidetoshi; Katoono, Ryo; Fujiwara, Kenshu; Murakoshi, Kei; Fukushima, Takanori; Nagaki, Aiichiro; Yoshida, Jun Ichi.

In: Chemistry Letters, Vol. 43, No. 1, 2014, p. 86-88.

Research output: Contribution to journal › Article › peer-review

Suzuki, T, Uchimura, Y, Nagasawa, F, Takeda, T, Kawai, H, Katoono, R, Fujiwara, K, Murakoshi, K, Fukushima, T, Nagaki, A & Yoshida, JI 2014, 'Expandability of Ultralong CC Bonds: Largely Different C1C2 bond lengths determined by low-temperature x-ray structural analyses on Pseudopolymorphs of 1,1-Bis(4-fluorophenyl)-2,2-bis(4-methoxyphenyl)pyracene', Chemistry Letters, vol. 43, no. 1, pp. 86-88. https://doi.org/10.1246/cl.130872

Suzuki, Takanori ; Uchimura, Yasuto ; Nagasawa, Fumika ; Takeda, Takashi ; Kawai, Hidetoshi ; Katoono, Ryo ; Fujiwara, Kenshu ; Murakoshi, Kei ; Fukushima, Takanori ; Nagaki, Aiichiro ; Yoshida, Jun Ichi. / Expandability of Ultralong CC Bonds : Largely Different C1C2 bond lengths determined by low-temperature x-ray structural analyses on Pseudopolymorphs of 1,1-Bis(4-fluorophenyl)-2,2-bis(4-methoxyphenyl)pyracene. In: Chemistry Letters. 2014 ; Vol. 43, No. 1. pp. 86-88.

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abstract = "Low-temperature X-ray analyses on several pseudopolymorphs (solvate crystals) revealed that the C1C2 bond length of the highly congested title molecule can adopt quite different values [1.700(6)1.739( 6)]. Such an unusual observation indicates that the ultralong covalent bond is endowed with {"}expandability,{"} thus the prestrained bond can be elongated or shortened very easily accompanied by only a minute change in energy, which can be compensated by intermolecular perturbation in the crystal.",

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AU - Suzuki, Takanori

AU - Uchimura, Yasuto

AU - Nagasawa, Fumika

AU - Takeda, Takashi

AU - Kawai, Hidetoshi

AU - Katoono, Ryo

AU - Fujiwara, Kenshu

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AU - Fukushima, Takanori

AU - Nagaki, Aiichiro

AU - Yoshida, Jun Ichi

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AB - Low-temperature X-ray analyses on several pseudopolymorphs (solvate crystals) revealed that the C1C2 bond length of the highly congested title molecule can adopt quite different values [1.700(6)1.739( 6)]. Such an unusual observation indicates that the ultralong covalent bond is endowed with "expandability," thus the prestrained bond can be elongated or shortened very easily accompanied by only a minute change in energy, which can be compensated by intermolecular perturbation in the crystal.

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Expandability of Ultralong CC Bonds: Largely Different C1C2 bond lengths determined by low-temperature x-ray structural analyses on Pseudopolymorphs of 1,1-Bis(4-fluorophenyl)-2,2-bis(4-methoxyphenyl)pyracene

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