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Why does the 31P1H NMR spectrum of cis-[Mo(CO)2(dppe)2] show two signals?

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Clash Royale CLAN TAG #URR8PPP 6 1 $begingroup$ I've tried searching for literature references that explain this, finding only a single reference which refers to the two signals as originating from phosphine environments cis/trans to carbonyls, however I'm having trouble rationalising why this occurs. inorganic-chemistry stereochemistry nmr-spectroscopy symmetry carbonyl-complexes share | improve this question edited Mar 6 at 12:31 Funk asked Mar 4 at 22:48 Funk Funk 46 4 $endgroup$ 1 $begingroup$ I just realised why, I'm a total idiot 😂 - I blame this on my lack of sleep. To ask a question that requires an actual answer @orthocresol I see you added a far better representation of the complex, do you have any tips on how to draw better looking chelating ligands? $endgroup$ – Funk Mar 4 at 23:04 2 $begingroup$ Not really! I just drew a regular octahedral complex in ChemDraw (from Templates

Memorial University of Newfoundland

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"Memorial University" redirects here. For other uses, see Memorial University (disambiguation). Memorial University of Newfoundland Latin: Universitatis Memorialis Terræ Novæ Former names Memorial University College Motto Provehito in Altum (Latin) Motto in English "Launch forth into the deep" Type Public Established 1925 Affiliation Non-denominational Endowment CAD$93 million [1] President Gary Kachanoski Visitor Honourable Judy Foote Academic staff 1,330 [2] Administrative staff 2,474 [2] Students 18,256 [3] Undergraduates 13,564 Postgraduates 3,774 Location St. John's , NL , Canada 47°34′19″N 52°43′58″W  /  47.57203°N 52.73265°W  / 47.57203; -52.73265 Coordinates: 47°34′19″N 52°43′58″W  /  47.57203°N 52.73265°W  / 47.57203; -52.73265 Campus Urban Main: 279 acres (113 ha) Grenfell: 185 acres (75 ha) Harlow: 25 acres (10 ha) Colours                         Nickname Sea-Hawks Affiliations ACU, AUCC, AUS, CARL, CIS, CVU, CUSID, UArctic, ATS, CBIE, CUP, I