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_P.-Powell-auth.-Principles-of-Organometallic-Chemistry-Springer-Netherlands-1988

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Allyl and diene complexes

Chemical Relative *Coupling

shift/b intensity Multiplicity constants/Hz

Compound B

1.5 3 doublet 6.0

2.0 3 doublet l.O(Rh)

3.1 1 doublet 2.0

3.6 1 doublet 2.0

4.6 1 quartet (1:3:3:1) 6.0

Compound C

1.8 3 doublet 6.0

2.0 1 doublet 2.0

2.1 3 doublet l.O(Rh)

3.2 1 doublet 2.0

3.5 1 quartet (1:3:3:1) 6.0

*Proton-proton coupling constants, unless otherwise indicated.

(Royal Holloway College)

8. The adduct formed between (IJ'-C,H 5 ) 2Pd and PMe, has been studied by

proton n.m.r. from -109° to - 3°C. Propose a structure for the 'frozen' adduct

6 9 7 2 3

4

-109 oc

-93°

-77°

-61°

....__

1

t

1

/'

-45°

-24°

-30

ii 6 5 4 3 2

276

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