Os-187 subspectra in H-1 and P-31{H-1} spectra of triosmium carbonyl clusters
(2002) In Magnetic Resonance in Chemistry 40(2). p.107-113- Abstract
- A survey of the use of Os-187 satellite subspectra in H-1 and P-31{H-1} spectra of triosmium carbonyl clusters is reported. By varying evolution delays in HMQC spectra of [Os-3(mu-H)(2)(CO)(10)] we have selectively extracted the values for (1)J(Os,H) and (2)J(Os,H), respectively. An analysis of the principal modes of phosphine coordination in triosmium clusters demonstrates that P-31{H-1} Os-187 satellite subspectra are diagnostic for equatorial coordination [(1)J(Os, P) = 211-223 Hz] or for axial coordination (perpendicular to the plane of the cluster) [(1)J(Os, P) approximate to 147 Hz]. Chelating and bridging diphosphines yield Os-187 satellite subspectra which are the sum of A(2)X and AA'X spin systems. If significant P-P coupling is... (More)
- A survey of the use of Os-187 satellite subspectra in H-1 and P-31{H-1} spectra of triosmium carbonyl clusters is reported. By varying evolution delays in HMQC spectra of [Os-3(mu-H)(2)(CO)(10)] we have selectively extracted the values for (1)J(Os,H) and (2)J(Os,H), respectively. An analysis of the principal modes of phosphine coordination in triosmium clusters demonstrates that P-31{H-1} Os-187 satellite subspectra are diagnostic for equatorial coordination [(1)J(Os, P) = 211-223 Hz] or for axial coordination (perpendicular to the plane of the cluster) [(1)J(Os, P) approximate to 147 Hz]. Chelating and bridging diphosphines yield Os-187 satellite subspectra which are the sum of A(2)X and AA'X spin systems. If significant P-P coupling is present, the AA'X component requires simulation. All observed (2)J(Os,P) trans-equatorial couplings fall in the range 38-65 Hz. Copyright (C) 2001 John Wiley Sons, Ltd. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/344379
- author
- Stchedroff, MJ ; Aime, S ; Gobetto, R ; Salassa, L and Nordlander, Ebbe LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- constants, coupling, satellite analysis, H-1 NMR, P-31 NMR, NMR, Os-187 NMR, triosmium carbonyl clusters
- in
- Magnetic Resonance in Chemistry
- volume
- 40
- issue
- 2
- pages
- 107 - 113
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:000173435300002
- scopus:0012817958
- ISSN
- 1097-458X
- DOI
- 10.1002/mrc.962
- language
- English
- LU publication?
- yes
- id
- e195a20b-be3f-478f-bcc6-770cdf878267 (old id 344379)
- date added to LUP
- 2016-04-01 12:12:44
- date last changed
- 2022-01-27 00:27:29
@article{e195a20b-be3f-478f-bcc6-770cdf878267,
abstract = {{A survey of the use of Os-187 satellite subspectra in H-1 and P-31{H-1} spectra of triosmium carbonyl clusters is reported. By varying evolution delays in HMQC spectra of [Os-3(mu-H)(2)(CO)(10)] we have selectively extracted the values for (1)J(Os,H) and (2)J(Os,H), respectively. An analysis of the principal modes of phosphine coordination in triosmium clusters demonstrates that P-31{H-1} Os-187 satellite subspectra are diagnostic for equatorial coordination [(1)J(Os, P) = 211-223 Hz] or for axial coordination (perpendicular to the plane of the cluster) [(1)J(Os, P) approximate to 147 Hz]. Chelating and bridging diphosphines yield Os-187 satellite subspectra which are the sum of A(2)X and AA'X spin systems. If significant P-P coupling is present, the AA'X component requires simulation. All observed (2)J(Os,P) trans-equatorial couplings fall in the range 38-65 Hz. Copyright (C) 2001 John Wiley Sons, Ltd.}},
author = {{Stchedroff, MJ and Aime, S and Gobetto, R and Salassa, L and Nordlander, Ebbe}},
issn = {{1097-458X}},
keywords = {{constants; coupling; satellite analysis; H-1 NMR; P-31 NMR; NMR; Os-187 NMR; triosmium carbonyl clusters}},
language = {{eng}},
number = {{2}},
pages = {{107--113}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Magnetic Resonance in Chemistry}},
title = {{Os-187 subspectra in H-1 and P-31{H-1} spectra of triosmium carbonyl clusters}},
url = {{http://dx.doi.org/10.1002/mrc.962}},
doi = {{10.1002/mrc.962}},
volume = {{40}},
year = {{2002}},
}