{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,20]],"date-time":"2025-10-20T14:43:07Z","timestamp":1760971387826,"version":"build-2065373602"},"reference-count":23,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2004,8,11]],"date-time":"2004-08-11T00:00:00Z","timestamp":1092182400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Magnetic Reson in Chemistry"],"published-print":{"date-parts":[[2004,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Multiple\u2010metal spin transitions which distort the HMQC spectra of rhodium carbonyl clusters are discussed. These effects are seen whenever the detector nucleus, e.g. <jats:sup>13<\/jats:sup>C or <jats:sup>31<\/jats:sup>P, couples to more than one metal spin and are not restricted to detector ligands occupying edge\u2010 or face\u2010bridging sites. These effects are illustrated in, but not limited to, the <jats:sup>13<\/jats:sup>C\u2010{<jats:sup>103<\/jats:sup>Rh} and <jats:sup>31<\/jats:sup>P\u2010{<jats:sup>103<\/jats:sup>Rh} HMQC spectra of [Rh<jats:sub>6<\/jats:sub>(CO)<jats:sub>15<\/jats:sub>L], (where L = P(4\u2010F\u2010C<jats:sub>6<\/jats:sub>H<jats:sub>4<\/jats:sub>)<jats:sub>3<\/jats:sub>), [Rh<jats:sub>4<\/jats:sub>(CO)<jats:sub>11<\/jats:sub>{P(OPh)<jats:sub>3<\/jats:sub>}], [Rh<jats:sub>6<\/jats:sub>C(CO)<jats:sub>15<\/jats:sub>]<jats:sup>2 \u2212<\/jats:sup> and [Rh<jats:sub>2<\/jats:sub>(carboxylate)<jats:sub>2<\/jats:sub>PPh<jats:sub>3<\/jats:sub>]. The effect is to modulate the intensity and position of the correlations in the metal dimension; cross peaks are displaced from the true chemical shift, additional cross peaks are seen and the intensity of the coherences varies as a function of the preparation delay, <jats:italic>d<\/jats:italic><jats:sub>2<\/jats:sub>, and coupling constant, and may go to zero at the conventional value of 1\/(2<jats:italic>J<\/jats:italic>). Analyses of the relevant spin systems are given together with experimental strategies to overcome these effects. Copyright \u00a9 2004 John Wiley &amp; Sons, Ltd.<\/jats:p>","DOI":"10.1002\/mrc.1428","type":"journal-article","created":{"date-parts":[[2004,8,11]],"date-time":"2004-08-11T05:01:22Z","timestamp":1092200482000},"page":"769-775","source":"Crossref","is-referenced-by-count":9,"title":["Application of HMQC spectroscopy to the observation of the metal resonance in polymetallic compounds: the effect of multiple\u2010metal spin transitions"],"prefix":"10.1002","volume":"42","author":[{"given":"B. T.","family":"Heaton","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J. A.","family":"Iggo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"I. S.","family":"Podkorytov","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S. 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