Secondary bonding in organopnicogen compounds. Comparison of the structures of octamethyl-1,1′-distibaferrocene and octamethyl-1,1′-diarsaferrocene

Arthur J. Ashe, Jeff W. Kampf, Steffen Pilotek, Roger Rousseau

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Abstract

2,2′,3,3′,4,4′,5,5′-Octamethyl-1,1′- diarsaferrocene (6) and 2,2′,3,3′,4,4′,5,5′-octamethyl-1,1′- distibaferrocene (7) were obtained from the reactions of the corresponding 1-phenyl-2,3,4,5-tetramethylheteroles with lithium followed by FeCl2. Red-black crystals of 7 form in space group P21/n with Z = 4, a = 7.346(2) Å, b = 14.357(2) Å, c = 15.927(3) Å, and β = 101.17(2)°, while red-brown crystals of 6 form in space group C2/c with Z = 4, a = 14.416(3) Å, b = 12.829(2) Å, c = 8.982(2) Å, and β = 103.94(2)°. Full structures have been determined and show a close (3.58 Å) inter-ring Sb⋯Sb contact for 7, but no close As⋯As contact is found for 6. Extended Hückel MO calculations have been performed on the family of diheteroferrocenes (C4H4E)2Fe (E = P, As, Sb, Bi).

Original languageEnglish
Pages (from-to)4067-4071
Number of pages5
JournalOrganometallics
Volume13
Issue number10
Publication statusPublished - 1994

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  • Inorganic Chemistry
  • Organic Chemistry

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Secondary bonding in organopnicogen compounds. Comparison of the structures of octamethyl-1,1′-distibaferrocene and octamethyl-1,1′-diarsaferrocene. / Ashe, Arthur J.; Kampf, Jeff W.; Pilotek, Steffen; Rousseau, Roger.

In: Organometallics, Vol. 13, No. 10, 1994, p. 4067-4071.

Research output: Contribution to journalArticle

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title = "Secondary bonding in organopnicogen compounds. Comparison of the structures of octamethyl-1,1′-distibaferrocene and octamethyl-1,1′-diarsaferrocene",
abstract = "2,2′,3,3′,4,4′,5,5′-Octamethyl-1,1′- diarsaferrocene (6) and 2,2′,3,3′,4,4′,5,5′-octamethyl-1,1′- distibaferrocene (7) were obtained from the reactions of the corresponding 1-phenyl-2,3,4,5-tetramethylheteroles with lithium followed by FeCl2. Red-black crystals of 7 form in space group P21/n with Z = 4, a = 7.346(2) {\AA}, b = 14.357(2) {\AA}, c = 15.927(3) {\AA}, and β = 101.17(2)°, while red-brown crystals of 6 form in space group C2/c with Z = 4, a = 14.416(3) {\AA}, b = 12.829(2) {\AA}, c = 8.982(2) {\AA}, and β = 103.94(2)°. Full structures have been determined and show a close (3.58 {\AA}) inter-ring Sb⋯Sb contact for 7, but no close As⋯As contact is found for 6. Extended H{\"u}ckel MO calculations have been performed on the family of diheteroferrocenes (C4H4E)2Fe (E = P, As, Sb, Bi).",
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T1 - Secondary bonding in organopnicogen compounds. Comparison of the structures of octamethyl-1,1′-distibaferrocene and octamethyl-1,1′-diarsaferrocene

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AU - Kampf, Jeff W.

AU - Pilotek, Steffen

AU - Rousseau, Roger

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N2 - 2,2′,3,3′,4,4′,5,5′-Octamethyl-1,1′- diarsaferrocene (6) and 2,2′,3,3′,4,4′,5,5′-octamethyl-1,1′- distibaferrocene (7) were obtained from the reactions of the corresponding 1-phenyl-2,3,4,5-tetramethylheteroles with lithium followed by FeCl2. Red-black crystals of 7 form in space group P21/n with Z = 4, a = 7.346(2) Å, b = 14.357(2) Å, c = 15.927(3) Å, and β = 101.17(2)°, while red-brown crystals of 6 form in space group C2/c with Z = 4, a = 14.416(3) Å, b = 12.829(2) Å, c = 8.982(2) Å, and β = 103.94(2)°. Full structures have been determined and show a close (3.58 Å) inter-ring Sb⋯Sb contact for 7, but no close As⋯As contact is found for 6. Extended Hückel MO calculations have been performed on the family of diheteroferrocenes (C4H4E)2Fe (E = P, As, Sb, Bi).

AB - 2,2′,3,3′,4,4′,5,5′-Octamethyl-1,1′- diarsaferrocene (6) and 2,2′,3,3′,4,4′,5,5′-octamethyl-1,1′- distibaferrocene (7) were obtained from the reactions of the corresponding 1-phenyl-2,3,4,5-tetramethylheteroles with lithium followed by FeCl2. Red-black crystals of 7 form in space group P21/n with Z = 4, a = 7.346(2) Å, b = 14.357(2) Å, c = 15.927(3) Å, and β = 101.17(2)°, while red-brown crystals of 6 form in space group C2/c with Z = 4, a = 14.416(3) Å, b = 12.829(2) Å, c = 8.982(2) Å, and β = 103.94(2)°. Full structures have been determined and show a close (3.58 Å) inter-ring Sb⋯Sb contact for 7, but no close As⋯As contact is found for 6. Extended Hückel MO calculations have been performed on the family of diheteroferrocenes (C4H4E)2Fe (E = P, As, Sb, Bi).

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