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Title: The Preparation of Luminescent, Mechanochromic Molecular Containers from Non‐Emissive Components: The Box Cations, [Au 6 (Triphos) 4 Br] 5+ and [Au 6 (Triphos) 4 Br 2 ] 4+

Abstract

Abstract Two new molecular boxes, the mono‐bromo box [Au 6 (Triphos) 4 Br](SbF 6 ) 5 ⋅6(CH 2 Cl 2 ), 4 mB , and the dibromo box, [Au 6 (Triphos) 4 Br 2 ⋅H 2 O](SbF 6 ) 4 ⋅4(CH 2 Cl 2 ), 5 dB , have been prepared in crystalline form. Although constructed from non‐luminescent components, both are strongly luminescent. Like its chloro counterpart, the mono‐bromo box [Au 6 (Triphos) 4 Br](SbF 6 ) 5 ⋅6(CH 2 Cl 2 ), 4 mB , is mechanochromic. Under grinding, it loses its luminescence. The bromo‐bridged helicate, [(μ‐Br){Au 3 (Triphos) 2 } 2 ](CF 3 SO 3 ) 5 ⋅2(CH 2 Cl 2 ), 3μ‐H , with a cation that is isomeric with the box [Au 6 (Triphos) 4 Br] 5+ , has also been prepared and crystallographically characterized. Unlike its chloro analogue, [(μ‐Br){Au 3 (Triphos) 2 } 2 ](CF 3 SO 3 ) 5 ⋅2(CH 2 Cl 2 ) is not luminescent. Thus, the cation produced upon grinding may be the cation present in the bromo‐bridged helicate, [(μ‐Br){Au 3 (Triphos) 2 } 2 ](CF 3 SO 3 ) 5 ⋅2(CH 2 Cl 2 ), 3μ‐H . The dibromo box, [Au 6 (Triphos)more » 4 Br 2 ⋅H 2 O](SbF 6 ) 4 ⋅4(CH 2 Cl 2 ), 5 dB , is not significantly mechanochromic.« less

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]
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  1. Department of Chemistry University of California One Shields Avenue Davis CA 95616 USA)Supramolecular Chemistry
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1494208
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Chemistry - A European Journal
Additional Journal Information:
Journal Name: Chemistry - A European Journal Journal Volume: 25 Journal Issue: 15; Journal ID: ISSN 0947-6539
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English

Citation Formats

Walters, Daniel T., Powers, Xian B., Olmstead, Marilyn M., and Balch, Alan L.. The Preparation of Luminescent, Mechanochromic Molecular Containers from Non‐Emissive Components: The Box Cations, [Au 6 (Triphos) 4 Br] 5+ and [Au 6 (Triphos) 4 Br 2 ] 4+. Germany: N. p., 2019. Web. doi:10.1002/chem.201805247.
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Walters, Daniel T., Powers, Xian B., Olmstead, Marilyn M., & Balch, Alan L.. The Preparation of Luminescent, Mechanochromic Molecular Containers from Non‐Emissive Components: The Box Cations, [Au 6 (Triphos) 4 Br] 5+ and [Au 6 (Triphos) 4 Br 2 ] 4+. Germany. https://doi.org/10.1002/chem.201805247
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Walters, Daniel T., Powers, Xian B., Olmstead, Marilyn M., and Balch, Alan L.. Mon . "The Preparation of Luminescent, Mechanochromic Molecular Containers from Non‐Emissive Components: The Box Cations, [Au 6 (Triphos) 4 Br] 5+ and [Au 6 (Triphos) 4 Br 2 ] 4+". Germany. https://doi.org/10.1002/chem.201805247.
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@article{osti_1494208,
title = {The Preparation of Luminescent, Mechanochromic Molecular Containers from Non‐Emissive Components: The Box Cations, [Au 6 (Triphos) 4 Br] 5+ and [Au 6 (Triphos) 4 Br 2 ] 4+},
author = {Walters, Daniel T. and Powers, Xian B. and Olmstead, Marilyn M. and Balch, Alan L.},
abstractNote = {Abstract Two new molecular boxes, the mono‐bromo box [Au 6 (Triphos) 4 Br](SbF 6 ) 5 ⋅6(CH 2 Cl 2 ), 4 mB , and the dibromo box, [Au 6 (Triphos) 4 Br 2 ⋅H 2 O](SbF 6 ) 4 ⋅4(CH 2 Cl 2 ), 5 dB , have been prepared in crystalline form. Although constructed from non‐luminescent components, both are strongly luminescent. Like its chloro counterpart, the mono‐bromo box [Au 6 (Triphos) 4 Br](SbF 6 ) 5 ⋅6(CH 2 Cl 2 ), 4 mB , is mechanochromic. Under grinding, it loses its luminescence. The bromo‐bridged helicate, [(μ‐Br){Au 3 (Triphos) 2 } 2 ](CF 3 SO 3 ) 5 ⋅2(CH 2 Cl 2 ), 3μ‐H , with a cation that is isomeric with the box [Au 6 (Triphos) 4 Br] 5+ , has also been prepared and crystallographically characterized. Unlike its chloro analogue, [(μ‐Br){Au 3 (Triphos) 2 } 2 ](CF 3 SO 3 ) 5 ⋅2(CH 2 Cl 2 ) is not luminescent. Thus, the cation produced upon grinding may be the cation present in the bromo‐bridged helicate, [(μ‐Br){Au 3 (Triphos) 2 } 2 ](CF 3 SO 3 ) 5 ⋅2(CH 2 Cl 2 ), 3μ‐H . The dibromo box, [Au 6 (Triphos) 4 Br 2 ⋅H 2 O](SbF 6 ) 4 ⋅4(CH 2 Cl 2 ), 5 dB , is not significantly mechanochromic.},
doi = {10.1002/chem.201805247},
journal = {Chemistry - A European Journal},
number = 15,
volume = 25,
place = {Germany},
year = {2019},
month = {2}
}
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