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Metallheteroborane chemistry. Part 8. —NMR study of some arsena‐ and stibaboranes and of the rhodadiarsenaboranes [3,3‐(PPh 3 ) 2 ‐3‐(H)‐ closo ‐3,1,2‐RhAs 2 B 9 H 9 ] and [3‐(η 5 ‐ C 5 Me 5 )‐ closo ‐3,1,2‐RhAs 2 B 9 H 9 ]
Author(s) -
Fontaine Xavier L. R.,
Kennedy John D.,
McGrath Marguerite,
Spalding Trevor R.
Publication year - 1991
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260290714
Subject(s) - chemistry , chemical shift , nuclear magnetic resonance spectroscopy , stereochemistry , cluster (spacecraft) , crystallography , computer science , programming language
The cluster 11 B and 1 H NMR chemical shifts of the known arsenaborane species [7‐Me‐ nido ‐7‐AsB 10 H 12 ], [7‐Me‐ nido ‐7‐AsB 10 H 11 ] − , [ nido ‐7‐AsB 10 H 12 ] − , [ closo ‐1,2‐As 2 B 10 H 10 ] and [ nido ‐7,8‐As 2 B 9 H 10 ] − , of the known stibaborane species [ closo ‐1,2‐Sb 2 B 10 H 10 ] and [ closo ‐1,2‐CSbB 10 H 11 ], and of the previously unreported metalladiarsenaboranes [3,3‐(PPh 3 ) 2 ‐3‐(H)‐ closo ‐3,1,2‐RhAs 2 B 9 H 9 ] and [3‐(η 5 ‐C 5 Me 5 )‐ closo ‐3,1,2‐RhAs 2 B 9 H 9 ] were measured and assigned by [ 11 B– 11 B]‐COSY, [ 1 H– 1 H]‐COSY‐{ 11 B}, and 1 H–{ 11 B} NMR experiments. Similarities and trends in the cluster shielding patterns were examined in order to assess changes in supposed electronic structures.