A composition comprising a perfluoro-N.sup.2-phosphinylamidine chromium salt complex having Structure PFAHNPACr I: ##STR00001##
wherein R.sup.f1 is a substituted phenyl group comprising alkyl groups at the 2 and 6 positions and at least one fluoro group or perfluoroalkyl group at the 3, 4, and/or 5 positions, R.sup.2 is a C.sub.1 to C.sub.30 organyl group, R.sup.4 and R.sup.5 are each independently a C.sub.1 to C.sub.30 organyl group, and CrX.sub.p is a chromium salt where X is a monoanion, and p is an integer from 2 to 6.

The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for oligomerizing olefins using the same. The ligand compound according to the present invention has a structure in which a substituent is substituted in the trans form, and thereby when used for olefin oligomerization, the activity of the catalyst used and the selectivity of 1-hexene and 1-octene can be increased.

The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for oligomerizing olefins using the same. The ligand compound according to the present invention has a structure in which a substituent is substituted in the trans form, and thereby when used for olefin oligomerization, the activity of the catalyst used and the selectivity of 1-hexene and 1-octene can be increased.

The invention provides the use of at least one binary group 15 element compound of the general formula R.sup.1R.sup.2E-ER.sup.3R.sup.4 (I) or R.sup.5E(ER.sup.6R.sup.7)2 (II) as the educt in a vapor deposition process. In this case, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently selected from the group consisting of H, an alkyl radical (C1-C10) and an aryl group, and E and E are independently selected from the group consisting of N, P, As, Sb and Bi. This use excludes hydrazine and its derivatives. The binary group 15 element compounds according to the invention allow the realization of a reproducible production and/or deposition of multinary, homogeneous and ultrapure 13/15 semiconductors of a defined combination at relatively low process temperatures. This makes it possible to completely waive the use of an organically substituted nitrogen compound such as 1.1 dimethyl hydrazine as the nitrogen source, which drastically reduces nitrogen contaminationscompared to the 13/15 semiconductors and/or 13/15 semiconductor layers produced with the known production methods.

The invention provides the use of at least one binary group 15 element compound of the general formula R.sup.1R.sup.2E-ER.sup.3R.sup.4 (I) or R.sup.5E(ER.sup.6R.sup.7)2 (II) as the educt in a vapor deposition process. In this case, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently selected from the group consisting of H, an alkyl radical (C1-C10) and an aryl group, and E and E are independently selected from the group consisting of N, P, As, Sb and Bi. This use excludes hydrazine and its derivatives. The binary group 15 element compounds according to the invention allow the realization of a reproducible production and/or deposition of multinary, homogeneous and ultrapure 13/15 semiconductors of a defined combination at relatively low process temperatures. This makes it possible to completely waive the use of an organically substituted nitrogen compound such as 1.1 dimethyl hydrazine as the nitrogen source, which drastically reduces nitrogen contaminationscompared to the 13/15 semiconductors and/or 13/15 semiconductor layers produced with the known production methods.

A composition comprising a perfluoro-N.sup.2-phosphinylamidine chromium salt complex having Structure PFAHNPACr I:

##STR00001##

wherein R.sup.f1 is a substituted phenyl group comprising alkyl groups at the 2 and 6 positions and at least one fluoro group or perfluoroalkyl group at the 3, 4, and/or 5 positions, R.sup.2 is a C.sub.1 to C.sub.30 organyl group, R.sup.4 and R.sup.5 are each independently a C.sub.1 to C.sub.30 organyl group, and CrX.sub.p is a chromium salt where X is a monoanion, and p is an integer from 2 to 6.

A composition comprising an N.sup.2-phosphinylamidine chromium salt complex having Structure FNPACr I:

##STR00001## wherein CrX.sub.p is a chromium salt where X is a monoanion and p is an integer from 2 to 6. A process comprising a) contacting i) ethylene, and ii) a catalyst system comprising an N.sup.2-phosphinylamidine chromium salt complex having Structure FNPACr I:

##STR00002## wherein CrX.sub.p is a chromium salt where X is a monoanion and p is an integer from 2 to 6; and b) forming an oligomer product in a reaction zone.

A composition comprising an N.sup.2-phosphinylamidine chromium salt complex having Structure FNPACr I:

##STR00001## wherein CrX.sub.p is a chromium salt where X is a monoanion and p is an integer from 2 to 6. A process comprising a) contacting i) ethylene, and ii) a catalyst system comprising an N.sup.2-phosphinylamidine chromium salt complex having Structure FNPACr I:

##STR00002## wherein CrX.sub.p is a chromium salt where X is a monoanion and p is an integer from 2 to 6; and b) forming an oligomer product in a reaction zone.

The present invention relates to a ligand compound, a catalyst system for olefin oligomerization and a method for oligomerizing an olefin using same. The catalyst system for olefin oligomerization according to the present invention exhibits high selectivity to 1-hexene or 1-octene while having excellent catalytic activity, thus enabling more efficient preparation of alpha-olefins.

A catalyst system comprising an N.sup.2-phosphinylamidine chromium salt complex having Structure PFHNPACr I: ##STR00001##
wherein Rf.sup.1, Rf.sup.2, Rf.sup.4, and Rf.sup.5 are independently selected from a perfluorohydrocarbyl group; and CrX.sub.p is a chromium salt; X is a monoanion, and p is an integer from 2 to 6. A process comprising a) contacting i) ethylene, ii) a catalyst system comprising an N.sup.2-phosphinylamidine chromium salt complex having Structure PFHNPACr I: ##STR00002##
wherein each Rf.sup.1, Rf.sup.2, Rf.sup.4, and Rf.sup.5 are independently selected from a perfluorohydrocarbyl group and CrX.sub.p is a chromium salt; X is a monoanion and p is an integer from 2 to 6, and iii) optionally an organic reaction medium; and b) forming an oligomer product in a reaction zone.