Lewis-base adducts of main Group 1 metal compounds. Part 2. Syntheses and structures of [Li4Cl4(pmdien)3] and [LiI(pmdien)]

Colin L. Raston; Brian W. Skelton; Claire R. Whitaker; Allan H. White

doi:10.1039/DT9880000987

Lewis-base adducts of main Group 1 metal compounds. Part 2. Syntheses and structures of [Li₄Cl₄(pmdien)₃] and [LiI(pmdien)]

Colin L. Raston, Brian W. Skelton, Claire R. Whitaker, Allan H. White

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

33 Citations (Scopus)

Abstract

Crystallization of lithium chloride from its solution in excess NNN′N′N″-pentamethyldiethylene-triamine (pmdien) in hydrocarbon yilds a 4:3 adduct, characterised crystallographically as [Li₄Cl₄(pmdien)₃], crystals of which are monoclinic, space group P2₁/n, with a = 9.318(7), b = 34.91(2), c = 13.578(7) Å, β = 97.08(5)°, Z = 4 oligomers; R = 0.077 for 2 286 observed reflections. Lithium iodide yields a 1:1 mononuclear species, [LiI(pmdien)], crystals of which are orthorhombic, space group Pbam, with a = 14.895(8), b = 14.815(8), c = 13.550(8) Å, Z = 8; R = 0.063 for 913 observed reflections. In the iodide, there are two independent molecules, each with m symmetry and four-co-ordinate lithium [Li-I 2.75(3), 2.67(3) Å], whereas the chloride contains both four- and five-co-ordinate lithium atoms.

Original language	English
Pages (from-to)	987-990
Number of pages	4
Journal	Journal of the Chemical Society, Dalton Transactions
Issue number	4
DOIs	https://doi.org/10.1039/DT9880000987
Publication status	Published - Apr 1988
Externally published	Yes

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title = "Lewis-base adducts of main Group 1 metal compounds. Part 2. Syntheses and structures of [Li4Cl4(pmdien)3] and [LiI(pmdien)]",

abstract = "Crystallization of lithium chloride from its solution in excess NNN′N′N″-pentamethyldiethylene-triamine (pmdien) in hydrocarbon yilds a 4:3 adduct, characterised crystallographically as [Li4Cl4(pmdien)3], crystals of which are monoclinic, space group P21/n, with a = 9.318(7), b = 34.91(2), c = 13.578(7) {\AA}, β = 97.08(5)°, Z = 4 oligomers; R = 0.077 for 2 286 observed reflections. Lithium iodide yields a 1:1 mononuclear species, [LiI(pmdien)], crystals of which are orthorhombic, space group Pbam, with a = 14.895(8), b = 14.815(8), c = 13.550(8) {\AA}, Z = 8; R = 0.063 for 913 observed reflections. In the iodide, there are two independent molecules, each with m symmetry and four-co-ordinate lithium [Li-I 2.75(3), 2.67(3) {\AA}], whereas the chloride contains both four- and five-co-ordinate lithium atoms.",

author = "Raston, {Colin L.} and Skelton, {Brian W.} and Whitaker, {Claire R.} and White, {Allan H.}",

year = "1988",

month = apr,

doi = "10.1039/DT9880000987",

language = "English",

pages = "987--990",

journal = "Journal of the Chemical Society, Dalton Transactions",

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T1 - Lewis-base adducts of main Group 1 metal compounds. Part 2. Syntheses and structures of [Li4Cl4(pmdien)3] and [LiI(pmdien)]

AU - Raston, Colin L.

AU - Skelton, Brian W.

AU - Whitaker, Claire R.

AU - White, Allan H.

PY - 1988/4

Y1 - 1988/4

N2 - Crystallization of lithium chloride from its solution in excess NNN′N′N″-pentamethyldiethylene-triamine (pmdien) in hydrocarbon yilds a 4:3 adduct, characterised crystallographically as [Li4Cl4(pmdien)3], crystals of which are monoclinic, space group P21/n, with a = 9.318(7), b = 34.91(2), c = 13.578(7) Å, β = 97.08(5)°, Z = 4 oligomers; R = 0.077 for 2 286 observed reflections. Lithium iodide yields a 1:1 mononuclear species, [LiI(pmdien)], crystals of which are orthorhombic, space group Pbam, with a = 14.895(8), b = 14.815(8), c = 13.550(8) Å, Z = 8; R = 0.063 for 913 observed reflections. In the iodide, there are two independent molecules, each with m symmetry and four-co-ordinate lithium [Li-I 2.75(3), 2.67(3) Å], whereas the chloride contains both four- and five-co-ordinate lithium atoms.

AB - Crystallization of lithium chloride from its solution in excess NNN′N′N″-pentamethyldiethylene-triamine (pmdien) in hydrocarbon yilds a 4:3 adduct, characterised crystallographically as [Li4Cl4(pmdien)3], crystals of which are monoclinic, space group P21/n, with a = 9.318(7), b = 34.91(2), c = 13.578(7) Å, β = 97.08(5)°, Z = 4 oligomers; R = 0.077 for 2 286 observed reflections. Lithium iodide yields a 1:1 mononuclear species, [LiI(pmdien)], crystals of which are orthorhombic, space group Pbam, with a = 14.895(8), b = 14.815(8), c = 13.550(8) Å, Z = 8; R = 0.063 for 913 observed reflections. In the iodide, there are two independent molecules, each with m symmetry and four-co-ordinate lithium [Li-I 2.75(3), 2.67(3) Å], whereas the chloride contains both four- and five-co-ordinate lithium atoms.

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DO - 10.1039/DT9880000987

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JO - Journal of the Chemical Society, Dalton Transactions

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Lewis-base adducts of main Group 1 metal compounds. Part 2. Syntheses and structures of [Li₄Cl₄(pmdien)₃] and [LiI(pmdien)]

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