Synthesis and crystal structure of the heteroleptic lanthanum(III) bis-diphosphinomethanide complex [La{CH(PPh2)2}2(I)(THF)2]

Stephen T Liddle; Keith Izod

doi:10.1016/j.jorganchem.2006.02.012

Synthesis and crystal structure of the heteroleptic lanthanum(III) bis-diphosphinomethanide complex [La{CH(PPh2)2}2(I)(THF)2]

Stephen T Liddle, Keith Izod

The University of Manchester

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

Abstract

Treatment of CH2(PPh2)2 with n-BuLi/t-BuOK in diethyl ether affords the potassium diphosphinomethanide complex [K{CH(PPh2)2}(OEt2)0.5] (1) in high yield. Metathesis of two equivalents of 1 with LaI3(THF)4 yields the heteroleptic bis-diphosphinomethanide complex [La{CH(PPh2)2}2(I)(THF)2] (2). X-ray crystallography shows the diphosphinomethanide ligands in 2 adopt different coordination modes in the solid state; one adopts a κ2-PP mode with no La–C contact, and the other adopts an η3-PCP mode, thus giving an eight-coordinate lanthanum centre.

Original language	English
Pages (from-to)	2599-2603
Number of pages	4
Journal	Journal of Organometallic Chemistry
Volume	691
Issue number	11
DOIs	https://doi.org/10.1016/j.jorganchem.2006.02.012
Publication status	Published - 15 May 2006

Keywords

Lanthanum(III); P-ligands; Diphosphinomethanide; Crystal structure; Heteroleptic

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10.1016/j.jorganchem.2006.02.012

CCDC 295061: Experimental Crystal Structure Determination
Liddle, S. (Contributor) & Izod, K. (Contributor), Cambridge Crystallographic Data Centre, 2006
DOI: 10.5517/cc9x13b, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/cc9x13b&sid=DataCite
Dataset

Cite this

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title = "Synthesis and crystal structure of the heteroleptic lanthanum(III) bis-diphosphinomethanide complex [La{CH(PPh2)2}2(I)(THF)2]",

abstract = "Treatment of CH2(PPh2)2 with n-BuLi/t-BuOK in diethyl ether affords the potassium diphosphinomethanide complex [K{CH(PPh2)2}(OEt2)0.5] (1) in high yield. Metathesis of two equivalents of 1 with LaI3(THF)4 yields the heteroleptic bis-diphosphinomethanide complex [La{CH(PPh2)2}2(I)(THF)2] (2). X-ray crystallography shows the diphosphinomethanide ligands in 2 adopt different coordination modes in the solid state; one adopts a κ2-PP mode with no La–C contact, and the other adopts an η3-PCP mode, thus giving an eight-coordinate lanthanum centre.",

keywords = "Lanthanum(III); P-ligands; Diphosphinomethanide; Crystal structure; Heteroleptic",

author = "Liddle, {Stephen T} and Keith Izod",

year = "2006",

month = may,

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doi = "10.1016/j.jorganchem.2006.02.012",

language = "English",

volume = "691",

pages = "2599--2603",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Synthesis and crystal structure of the heteroleptic lanthanum(III) bis-diphosphinomethanide complex [La{CH(PPh2)2}2(I)(THF)2]

AU - Liddle, Stephen T

AU - Izod, Keith

PY - 2006/5/15

Y1 - 2006/5/15

N2 - Treatment of CH2(PPh2)2 with n-BuLi/t-BuOK in diethyl ether affords the potassium diphosphinomethanide complex [K{CH(PPh2)2}(OEt2)0.5] (1) in high yield. Metathesis of two equivalents of 1 with LaI3(THF)4 yields the heteroleptic bis-diphosphinomethanide complex [La{CH(PPh2)2}2(I)(THF)2] (2). X-ray crystallography shows the diphosphinomethanide ligands in 2 adopt different coordination modes in the solid state; one adopts a κ2-PP mode with no La–C contact, and the other adopts an η3-PCP mode, thus giving an eight-coordinate lanthanum centre.

AB - Treatment of CH2(PPh2)2 with n-BuLi/t-BuOK in diethyl ether affords the potassium diphosphinomethanide complex [K{CH(PPh2)2}(OEt2)0.5] (1) in high yield. Metathesis of two equivalents of 1 with LaI3(THF)4 yields the heteroleptic bis-diphosphinomethanide complex [La{CH(PPh2)2}2(I)(THF)2] (2). X-ray crystallography shows the diphosphinomethanide ligands in 2 adopt different coordination modes in the solid state; one adopts a κ2-PP mode with no La–C contact, and the other adopts an η3-PCP mode, thus giving an eight-coordinate lanthanum centre.

KW - Lanthanum(III); P-ligands; Diphosphinomethanide; Crystal structure; Heteroleptic

U2 - 10.1016/j.jorganchem.2006.02.012

DO - 10.1016/j.jorganchem.2006.02.012

M3 - Article

VL - 691

SP - 2599

EP - 2603

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

SN - 0022-328X

IS - 11

ER -

Synthesis and crystal structure of the heteroleptic lanthanum(III) bis-diphosphinomethanide complex [La{CH(PPh2)2}2(I)(THF)2]

Abstract

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Datasets

CCDC 295061: Experimental Crystal Structure Determination

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