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Intermolecular stacking of a tetranuclear cyclic Pt(II) complex: NMR characterization and X-ray crystal structure of cis-trans-cis-trans tetra[ mu-2,6-diethynyl-4-nitroanilinebis(tri(p-tolyl)phosphine)platinum(II)]

Intermolecular stacking of a tetranuclear cyclic Pt(II) complex: NMR characterization and X-ray crystal structure of cis-trans-cis-trans tetra[ mu-2,6-diethynyl-4-nitroanilinebis(tri(p-tolyl)phosphine)platinum(II)]
Intermolecular stacking of a tetranuclear cyclic Pt(II) complex: NMR characterization and X-ray crystal structure of cis-trans-cis-trans tetra[ mu-2,6-diethynyl-4-nitroanilinebis(tri(p-tolyl)phosphine)platinum(II)]
The synthesis and characterization of a tetranuclear Pt complex, cis-traps-cis-traps tetra[mu-2,6-diethynyl-4-nitroaniline-bis(tri(ptolyl)phosphine) platinum(II)], namely [L2Pt-DENA](4) with L = tri-p-tolylphosphine, is reported. The complex was obtained by the dehydrohalogenative condensation of 2,6-diethynyl-4-nitroaniline (DENA) with cis-[dichlorobis(tri(p-tolyl)phosphine)platinum(II)]. The single crystal structure determination of [L2Pt-DENAL indicated the formation of a neutral molecular cycle with four alternating platinum units in cis and trans configurations, all bridged with DENA spacers with the presence of solvent (toluene) crystallization molecules. A twisted tetranuclear cyclic feature was identified. The formation of intermolecular stacks of the tetranuclear complex in solution was assessed by means of nuclear Overhauser enhancement spectroscopy (NOESY) and rotating frame Overhauser effect spectroscopy (ROESY) characterizations.
cyclic platinum complexes, x-ray, 2d nmr spectra photophysical properties, macrocycles, diffraction, relaxation, acetylides, chemistry, polymers, square
0022-328X
5920-5926
Fratoddi, Ilaria
b8b2c602-b7d4-4005-81f4-0ead1d409121
Delfini, Maurizio
963c9331-8b27-4846-a65f-a6be9564138a
Sciubba, Fabio
5783f57e-a54f-44cd-816b-48d811b1b6b3
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Ogilvie, Helen R.
667a68cc-7f86-47e6-a7fb-e9d3b7fdd488
Russo, Maria V.
c1aeb581-5867-424c-9b88-f4a6547b198d
Fratoddi, Ilaria
b8b2c602-b7d4-4005-81f4-0ead1d409121
Delfini, Maurizio
963c9331-8b27-4846-a65f-a6be9564138a
Sciubba, Fabio
5783f57e-a54f-44cd-816b-48d811b1b6b3
Hursthouse, Michael B.
57a2ddf9-b1b3-4f38-bfe9-ef2f526388da
Ogilvie, Helen R.
667a68cc-7f86-47e6-a7fb-e9d3b7fdd488
Russo, Maria V.
c1aeb581-5867-424c-9b88-f4a6547b198d

Fratoddi, Ilaria, Delfini, Maurizio, Sciubba, Fabio, Hursthouse, Michael B., Ogilvie, Helen R. and Russo, Maria V. (2006) Intermolecular stacking of a tetranuclear cyclic Pt(II) complex: NMR characterization and X-ray crystal structure of cis-trans-cis-trans tetra[ mu-2,6-diethynyl-4-nitroanilinebis(tri(p-tolyl)phosphine)platinum(II)]. Journal of Organometallic Chemistry, 691 (26), 5920-5926. (doi:10.1016/j.jorganchem.2006.09.059).

Record type: Article

Abstract

The synthesis and characterization of a tetranuclear Pt complex, cis-traps-cis-traps tetra[mu-2,6-diethynyl-4-nitroaniline-bis(tri(ptolyl)phosphine) platinum(II)], namely [L2Pt-DENA](4) with L = tri-p-tolylphosphine, is reported. The complex was obtained by the dehydrohalogenative condensation of 2,6-diethynyl-4-nitroaniline (DENA) with cis-[dichlorobis(tri(p-tolyl)phosphine)platinum(II)]. The single crystal structure determination of [L2Pt-DENAL indicated the formation of a neutral molecular cycle with four alternating platinum units in cis and trans configurations, all bridged with DENA spacers with the presence of solvent (toluene) crystallization molecules. A twisted tetranuclear cyclic feature was identified. The formation of intermolecular stacks of the tetranuclear complex in solution was assessed by means of nuclear Overhauser enhancement spectroscopy (NOESY) and rotating frame Overhauser effect spectroscopy (ROESY) characterizations.

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Published date: 2006
Keywords: cyclic platinum complexes, x-ray, 2d nmr spectra photophysical properties, macrocycles, diffraction, relaxation, acetylides, chemistry, polymers, square

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Local EPrints ID: 44579
URI: http://eprints.soton.ac.uk/id/eprint/44579
ISSN: 0022-328X
PURE UUID: 1ca124bd-7e61-491d-8db3-c83c26104271

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Date deposited: 02 Mar 2007
Last modified: 13 Mar 2019 21:07

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