Abstract
On the basis of the known aminodiphosphinoamine ligand Ph
2
PN(i-Pr)P(Ph) N(i-Pr)-H (3a), differently substituted aminodiphosphinoamine PNPN-H ligands (3) were prepared. By using different synthetic methods, the N-substituted ligands Ph
2
PN (i-Pr)P(Ph)N(c-Hex)-H (3b), Ph
2
PN(c-Hex)P(Ph)N(i-Pr)-H (3g), and Ph
2
PN(i-Pr)P(Ph) N[(CH
2
)
3
Si(OEt)
3
]-H (3c), in addition to the formerly described Ph
2
PN(n-Hex)P (Ph)N (i-Pr)-H (3h), Ph
2
PN(i-Pr)P(Ph)N(Et)-H (3d), Ph
2
PN(i-Pr)P(Ph)N(Me)-H (3e), and Ph
2
PN(c-Hex)P(Ph)N(c-Hex)-H (3f), were obtained. In addition, Ph
2
PN(i-Pr)P(Me)N(i-Pr)-H (3i), (cyclopentyl)
2
PN(i-Pr)P(Ph)N(i-Pr)-H (3j), (-O-CH
2
-CH
2
-O-)PN(i-Pr)P(Ph)N(i-Pr)-H (3k), and (1-Ad)
2
PN(i-Pr)P(Ph)N(i-Pr)-H (3l) were prepared with different P-substitutions. All compounds were characterized and the molecular structures of the intermediates Ph
2
PN(i-Pr)P(Ph)Cl (1a) and (cyclopentyl)
2
PN(i-Pr)P(Ph)Cl (1e) and the ligand (1-Ad)
2
PN(i-Pr)P(Ph)N(i-Pr)-H (3l) were investigated by single-crystal X-ray diffraction.
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