Os-187 subspectra in H-1 and P-31{H-1} spectra of triosmium carbonyl clusters

MJ Stchedroff; S Aime; R Gobetto; L Salassa; Ebbe Nordlander

doi:10.1002/mrc.962

Os-187 subspectra in H-1 and P-31{H-1} spectra of triosmium carbonyl clusters

MJ Stchedroff, S Aime, R Gobetto, L Salassa, Ebbe Nordlander

Department of Chemistry

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

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.

Original language	English
Pages (from-to)	107-113
Journal	Magnetic Resonance in Chemistry
Volume	40
Issue number	2
DOIs	https://doi.org/10.1002/mrc.962
Publication status	Published - 2002

Subject classification (UKÄ)

Inorganic Chemistry

Free keywords

constants
coupling
satellite analysis
H-1 NMR
P-31 NMR
NMR
Os-187 NMR
triosmium carbonyl clusters

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10.1002/mrc.962

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title = "Os-187 subspectra in H-1 and P-31\{H-1\} spectra of triosmium carbonyl clusters",

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.",

keywords = "constants, coupling, satellite analysis, H-1 NMR, P-31 NMR, NMR, Os-187 NMR, triosmium carbonyl clusters",

author = "MJ Stchedroff and S Aime and R Gobetto and L Salassa and Ebbe Nordlander",

year = "2002",

doi = "10.1002/mrc.962",

language = "English",

volume = "40",

pages = "107--113",

journal = "Magnetic Resonance in Chemistry",

issn = "1097-458X",

publisher = "John Wiley \& Sons Inc.",

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TY - JOUR

T1 - Os-187 subspectra in H-1 and P-31{H-1} spectra of triosmium carbonyl clusters

AU - Stchedroff, MJ

AU - Aime, S

AU - Gobetto, R

AU - Salassa, L

AU - Nordlander, Ebbe

PY - 2002

Y1 - 2002

N2 - 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.

AB - 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.

KW - constants

KW - coupling

KW - satellite analysis

KW - H-1 NMR

KW - P-31 NMR

KW - NMR

KW - Os-187 NMR

KW - triosmium carbonyl clusters

UR - https://www.scopus.com/pages/publications/0012817958

U2 - 10.1002/mrc.962

DO - 10.1002/mrc.962

M3 - Article

SN - 1097-458X

VL - 40

SP - 107

EP - 113

JO - Magnetic Resonance in Chemistry

JF - Magnetic Resonance in Chemistry

IS - 2

ER -

Os-187 subspectra in H-1 and P-31{H-1} spectra of triosmium carbonyl clusters

Abstract

Subject classification (UKÄ)

Free keywords

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