Metal-templated synthesis of macrocyclic (triphosphine)molybdenum complexes

Diel, Bruce N.; Brandt, Paul F.; Haltiwanger, R. C.; Hackney, Michael L. J.; Norman, A. D.

doi:10.1021/ic00313a025

Cited by 54 publications

(16 citation statements)

References 5 publications

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“…The formation of multidentate phosphine ligands by utilising hydrophosphination of alkenes as the P-C bond forming step is well documented and this has been extended to the intramolecular template assisted synthesis of P-macrocycles leading to macrocyclic phosphines with aliphatic backbones. 3, 5 It is of interest to see if a wider range of synthetic strategies might be used to give P 2 C NHC macrocycles with greater structural diversity and with alternative backbone functions including the more flexible aliphatic linkers. One such potential method is based upon internal hydrophosphination and our attempts to explore this methodology are discussed in this paper.…”

Section: Introductionmentioning

confidence: 99%

Manganese complexes of phosphino-μ-phosphido ligands

et al. 2009

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The reaction of the manganese precursors [MnOTf(CO)3{1,2-(PH2)2C6H4}], 5, or [MnOTf(CO)3{1,2-(PH2)2C2H4}], 6, with either the silver complex of 1,3-diallylbenzimidazol-2-ylidiene or the free carbene, resulted in the formation of the new, dimeric phosphino-micro-phosphido manganese species 7 and 8. Complex 7 crystallises in two isomeric forms (cis and trans), depending upon the choice of solvent. The structures of both isomers have been determined by single-crystal X-ray techniques.

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Section: Introductionmentioning

confidence: 99%

Manganese complexes of phosphino-μ-phosphido ligands

et al. 2009

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“…The geometry about the Mo 0 centre is octahedral, with the major source of distortion from ideal being the disparate metal−donor bond lengths [Mo−P av = 2.491(2) and Mo−C av = 1.989(4) Å]. The average Mo−P bond length is closer to that in [Mo(12aneP 3 H 3 )(CO) 3 ] [2.476(1) Å]7 than in [Mo(12aneP 3 iPr 3 )(CO) 3 ] [2.527(1) Å] 8. There are no significant differences in the Mo−P bond lengths for the secondary and tertiary phosphorus donors; the M−P tert bond being just 0.01 Å longer than the M−P sec bonds.…”

Section: Resultsmentioning

confidence: 97%

Pendant Functionalised Triphosphamacrocycles

Edwards¹,

Ingold²,

Liyanage³

et al. 2001

Eur. J. Inorg. Chem.

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The selective functionalisation of a single phosphorus atom in the parent [Mo(CO)3(12aneP3H3)], where 12aneP3H3 is 1,5,9‐triphosphacyclododecane, has been achieved by deprotonation and subsequent reaction with an ether containing an alkyl halide group. Yields of the monosubstituted products are very sensitive to the reaction conditions, which must be carefully controlled in order to achieve reasonable selectivity. In addition, trisubstitution of [M(CO)3(12aneP3H3)] with carbon chains containing pendant donors such as ethers, thioethers, amines and phosphanes has been achieved by both deprotonation/addition (M = Mo0) and hydrophosphination (M = Cr0) protocols. The new compounds have been characterised by spectroscopic and analytical techniques, including X‐ray crystallography, and a selection of the P3 macrocycles released from their templates by oxidation and base digestion.

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“…The Pd(2)-P distances [Pd(2)-P(1) 2.322(4), Pd(2)-P(2) 2.332(4), Pd(2)-P(3) 2.332(4) and Pd(2)-P(4) 2.316 (3) A] are very similar. For the same P atom, the Pd(1)-P distances [Pd(1)-P(1) 2.247(3) and Pd(1)-P(4) 2.243 (4) A] is shorter than the Pd(2)-P distances. This is a reflection of the relative trans influence of P versus Cl.…”

Section: 011mentioning

confidence: 97%

“…Tri- [4][5][6][7][8] and tetra-phosphorus [2,3,9,10] macrocycles with various ring sizes have been synthesized via template synthesis. We are interested in the preparation and chemistry of tetra-phosphorus macrocycle.…”

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confidence: 99%