| abstract |
The present invention relates to a composition comprising a phosphacycle-containing ligating compound represented as:wherein:P is phosphorus; Xis phosphorus; each of Rand Ris independently a substituted orunsubstituted hydrocarbon derivative, a substituted or unsubstituted heterohydrocarbon derivative, or a substituted or unsubstituted heteroatom group having from one to 50 non-hydrogen atoms; m is 1; Rand Rare linked together to form a divalent moiety represented aswhich together with P forms a cyclic structure (phosphacycle) containing from 3 to 10 ring atoms; each of Rand Ris independently hydrogen, halogen, a substituted or unsubstituted hydrocarbon derivative, a substituted or unsubstituted heterohydrocarbon derivative, or a substituted or unsubstituted heteroatom group having from one to 50 non-hydrogen atoms; Rand Rare optionally linked together to form a divalent moiety represented aswherein the optional character of the linkage is depicted by a dashed connection, which together with Xforms a cyclic structure containing from 3 to 10 ring atoms; Y is a divalent linking group [L(R)]between P andXcontaining from one to 50 non-hydrogen atoms; [L(R)]is represented by:wherein each L is independently selected from the group consisting of nitrogen; p is an integer number from 1 to 6; Ris independently hydrogen, halogen, substituted or unsubstituted hydrocarbon derivative, substituted or unsubstituted heterohydrocarbon derivative, or a substituted or unsubstituted heteroatom group; q is 0, 1, or 2; provided that the [L]subunit of the divalent linking group [L(R)]does not comprise an amidine (N-C=N) group; further provided that in at least one phosphacycle of the phosphacycle-containing ligating compound, both atoms directly bonded to P or Xare sphybridized; still further provided that one or two phosphacycles comprising P, R, and R, or comprising X, R, and R, contain no P-N, P-O, or P-S bonds within the ring part of the phosphacycle; two Rgroups attached to the same L atom may be optionally linked together to form a cyclic structure that contains from 3 to 10 ring atoms; from two to ten independently selected ligating compounds may be optionally linked together via their respective independently selected Y, R, R, R, Ror Rgroups to form a poly(ligating compound) species, and wherein the composition is not 8-aza -1-phosphatricylo[3.3.0.0]octane. |