Amidinate bisborohydride complexes of rare-earth metals [6-Me-C5H3N-2-CH2C(NPri)2]Ln(BH4)2THF2 (Ln = Y, Nd): synthesis, structure, and catalytic activity in isoprene polymerization
Reactions of equimolar amounts of RN=C=NR (R = Pr i , Cy) and 6-Me-C 5 H 3 N-2-CH 2 Li prepared in situ by metallation of 2,6-dimethylpyridine with n -butyllithium afforded corresponding lithium amidinates [Li{6-Me-C 5 H 3 N-2-CH 2 C(NPr i ) 2 }]•1/3THF ( 1 ) and [Li{6-MeC 5 H 3 N-2-CH 2 C(NCy) 2 }]...
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| Veröffentlicht in: | Russian chemical bulletin 2016-12, Vol.65 (12), p.2832-2840 |
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| creator | Skvortsov, G. G. Tolpygin, A. O. Lyubov, D. M. Khamaletdinova, N. M. Cherkasov, A. V. Lyssenko, K. A. Trifonov, A. A. |
| description | Reactions of equimolar amounts of RN=C=NR (R = Pr
i
, Cy) and 6-Me-C
5
H
3
N-2-CH
2
Li prepared
in situ
by metallation of 2,6-dimethylpyridine with
n
-butyllithium afforded corresponding lithium amidinates [Li{6-Me-C
5
H
3
N-2-CH
2
C(NPr
i
)
2
}]•1/3THF (
1
) and [Li{6-MeC
5
H
3
N-2-CH
2
C(NCy)
2
}]
4
(
2
) containing new tridentate amidinate ligands. The salt metathesis reactions of Ln(BH
4
)
3
(THF)
3
(Ln = Y, Nd) with
1
(1: 1 molar ratio, THF) result in neutral amidinate bisborohydride complexes [Ln{6-Me-C
5
H
3
N-2-CH
2
C(NPr
i
)
2
}(BH
4
)
2
(THF)
2
} (Ln = Y (
3
), Nd (
4
)). According to X-ray data, both compounds are monomeric, terminal borohydride ligands being coordinated to the rare earth metal atom in η
3
-fashion. Nitrogen atoms of the pyridine fragments of amidinate ligands are not involved in complexation with metal cations. Complexes
3
and
4
in combination with [Ph
3
C][B(C
6
F
5
)
4
] and AlBu
3
i
(1: 1: 10 molar ratio) exhibit catalytic activity in isoprene polymerization. |
| doi_str_mv | 10.1007/s11172-016-1664-9 |
| format | Article |
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i
, Cy) and 6-Me-C
5
H
3
N-2-CH
2
Li prepared
in situ
by metallation of 2,6-dimethylpyridine with
n
-butyllithium afforded corresponding lithium amidinates [Li{6-Me-C
5
H
3
N-2-CH
2
C(NPr
i
)
2
}]•1/3THF (
1
) and [Li{6-MeC
5
H
3
N-2-CH
2
C(NCy)
2
}]
4
(
2
) containing new tridentate amidinate ligands. The salt metathesis reactions of Ln(BH
4
)
3
(THF)
3
(Ln = Y, Nd) with
1
(1: 1 molar ratio, THF) result in neutral amidinate bisborohydride complexes [Ln{6-Me-C
5
H
3
N-2-CH
2
C(NPr
i
)
2
}(BH
4
)
2
(THF)
2
} (Ln = Y (
3
), Nd (
4
)). According to X-ray data, both compounds are monomeric, terminal borohydride ligands being coordinated to the rare earth metal atom in η
3
-fashion. Nitrogen atoms of the pyridine fragments of amidinate ligands are not involved in complexation with metal cations. Complexes
3
and
4
in combination with [Ph
3
C][B(C
6
F
5
)
4
] and AlBu
3
i
(1: 1: 10 molar ratio) exhibit catalytic activity in isoprene polymerization.</description><identifier>ISSN: 1066-5285</identifier><identifier>EISSN: 1573-9171</identifier><identifier>DOI: 10.1007/s11172-016-1664-9</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Butyllithium ; Catalysis ; Catalytic activity ; Chemical synthesis ; Chemistry ; Chemistry and Materials Science ; Chemistry/Food Science ; Coordination compounds ; Fragments ; Full Articles ; Inorganic Chemistry ; Isoprene ; Ligands ; Lithium ; Metathesis ; Neodymium ; Nitrogen atoms ; Organic Chemistry ; Polymerization ; Rare earth elements ; Yttrium</subject><ispartof>Russian chemical bulletin, 2016-12, Vol.65 (12), p.2832-2840</ispartof><rights>Springer Science+Business Media New York 2016</rights><rights>Copyright Springer Science & Business Media 2016</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2319-a75f85d7cd27d5a99fd4c58928cf46a8d25b498ebb7d1bce32cc0bfbd221246b3</citedby><cites>FETCH-LOGICAL-c2319-a75f85d7cd27d5a99fd4c58928cf46a8d25b498ebb7d1bce32cc0bfbd221246b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11172-016-1664-9$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11172-016-1664-9$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Skvortsov, G. G.</creatorcontrib><creatorcontrib>Tolpygin, A. O.</creatorcontrib><creatorcontrib>Lyubov, D. M.</creatorcontrib><creatorcontrib>Khamaletdinova, N. M.</creatorcontrib><creatorcontrib>Cherkasov, A. V.</creatorcontrib><creatorcontrib>Lyssenko, K. A.</creatorcontrib><creatorcontrib>Trifonov, A. A.</creatorcontrib><title>Amidinate bisborohydride complexes of rare-earth metals [6-Me-C5H3N-2-CH2C(NPri)2]Ln(BH4)2THF2 (Ln = Y, Nd): synthesis, structure, and catalytic activity in isoprene polymerization</title><title>Russian chemical bulletin</title><addtitle>Russ Chem Bull</addtitle><description>Reactions of equimolar amounts of RN=C=NR (R = Pr
i
, Cy) and 6-Me-C
5
H
3
N-2-CH
2
Li prepared
in situ
by metallation of 2,6-dimethylpyridine with
n
-butyllithium afforded corresponding lithium amidinates [Li{6-Me-C
5
H
3
N-2-CH
2
C(NPr
i
)
2
}]•1/3THF (
1
) and [Li{6-MeC
5
H
3
N-2-CH
2
C(NCy)
2
}]
4
(
2
) containing new tridentate amidinate ligands. The salt metathesis reactions of Ln(BH
4
)
3
(THF)
3
(Ln = Y, Nd) with
1
(1: 1 molar ratio, THF) result in neutral amidinate bisborohydride complexes [Ln{6-Me-C
5
H
3
N-2-CH
2
C(NPr
i
)
2
}(BH
4
)
2
(THF)
2
} (Ln = Y (
3
), Nd (
4
)). According to X-ray data, both compounds are monomeric, terminal borohydride ligands being coordinated to the rare earth metal atom in η
3
-fashion. Nitrogen atoms of the pyridine fragments of amidinate ligands are not involved in complexation with metal cations. Complexes
3
and
4
in combination with [Ph
3
C][B(C
6
F
5
)
4
] and AlBu
3
i
(1: 1: 10 molar ratio) exhibit catalytic activity in isoprene polymerization.</description><subject>Butyllithium</subject><subject>Catalysis</subject><subject>Catalytic activity</subject><subject>Chemical synthesis</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Chemistry/Food Science</subject><subject>Coordination compounds</subject><subject>Fragments</subject><subject>Full Articles</subject><subject>Inorganic Chemistry</subject><subject>Isoprene</subject><subject>Ligands</subject><subject>Lithium</subject><subject>Metathesis</subject><subject>Neodymium</subject><subject>Nitrogen atoms</subject><subject>Organic Chemistry</subject><subject>Polymerization</subject><subject>Rare earth elements</subject><subject>Yttrium</subject><issn>1066-5285</issn><issn>1573-9171</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp1kU1v1DAQhiMEEqXwA7hZ4rIrrcGefNlIHErUEqRl4VAOCKHIsSesq40dbG9F-F38QFIth156mjm8zzsjPVn2krPXnLH6TeSc10AZryivqoLKR9kZL-ucSl7zx8vOqoqWIMqn2bMYbxhjIIQ4y_5ejNZYpxKS3sbeB7-fTbAGifbjdMDfGIkfSFABKaqQ9mTEpA6RfK_oJ6RN2eY7CrRpoVntvgS7hh9bt3rfFmu4bq-ArLaOvCPfNmRn1m9JnF3aY7RxQ2IKR52OATdEOUO0WlrnZDVROtlbm2ZiHbHRTwEdkskf5hGD_aOS9e559mRYfsAX_-d59vXq8rpp6fbzh4_NxZZqyLmkqi4HUZpaG6hNqaQcTKFLIUHooaiUMFD2hRTY97XhvcYctGb90BsADkXV5-fZq1PvFPyvI8bU3fhjcMvJjksGCysqWFL8lNLBxxhw6KZgRxXmjrPuTk53ktMtcro7OZ1cGDgxccm6nxjuNT8I_QOs_5Gl</recordid><startdate>20161201</startdate><enddate>20161201</enddate><creator>Skvortsov, G. G.</creator><creator>Tolpygin, A. O.</creator><creator>Lyubov, D. M.</creator><creator>Khamaletdinova, N. M.</creator><creator>Cherkasov, A. V.</creator><creator>Lyssenko, K. A.</creator><creator>Trifonov, A. A.</creator><general>Springer US</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20161201</creationdate><title>Amidinate bisborohydride complexes of rare-earth metals [6-Me-C5H3N-2-CH2C(NPri)2]Ln(BH4)2THF2 (Ln = Y, Nd): synthesis, structure, and catalytic activity in isoprene polymerization</title><author>Skvortsov, G. G. ; Tolpygin, A. O. ; Lyubov, D. M. ; Khamaletdinova, N. M. ; Cherkasov, A. V. ; Lyssenko, K. A. ; Trifonov, A. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2319-a75f85d7cd27d5a99fd4c58928cf46a8d25b498ebb7d1bce32cc0bfbd221246b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Butyllithium</topic><topic>Catalysis</topic><topic>Catalytic activity</topic><topic>Chemical synthesis</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Chemistry/Food Science</topic><topic>Coordination compounds</topic><topic>Fragments</topic><topic>Full Articles</topic><topic>Inorganic Chemistry</topic><topic>Isoprene</topic><topic>Ligands</topic><topic>Lithium</topic><topic>Metathesis</topic><topic>Neodymium</topic><topic>Nitrogen atoms</topic><topic>Organic Chemistry</topic><topic>Polymerization</topic><topic>Rare earth elements</topic><topic>Yttrium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Skvortsov, G. G.</creatorcontrib><creatorcontrib>Tolpygin, A. O.</creatorcontrib><creatorcontrib>Lyubov, D. M.</creatorcontrib><creatorcontrib>Khamaletdinova, N. M.</creatorcontrib><creatorcontrib>Cherkasov, A. V.</creatorcontrib><creatorcontrib>Lyssenko, K. A.</creatorcontrib><creatorcontrib>Trifonov, A. A.</creatorcontrib><collection>CrossRef</collection><jtitle>Russian chemical bulletin</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Skvortsov, G. G.</au><au>Tolpygin, A. O.</au><au>Lyubov, D. M.</au><au>Khamaletdinova, N. M.</au><au>Cherkasov, A. V.</au><au>Lyssenko, K. A.</au><au>Trifonov, A. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Amidinate bisborohydride complexes of rare-earth metals [6-Me-C5H3N-2-CH2C(NPri)2]Ln(BH4)2THF2 (Ln = Y, Nd): synthesis, structure, and catalytic activity in isoprene polymerization</atitle><jtitle>Russian chemical bulletin</jtitle><stitle>Russ Chem Bull</stitle><date>2016-12-01</date><risdate>2016</risdate><volume>65</volume><issue>12</issue><spage>2832</spage><epage>2840</epage><pages>2832-2840</pages><issn>1066-5285</issn><eissn>1573-9171</eissn><abstract>Reactions of equimolar amounts of RN=C=NR (R = Pr
i
, Cy) and 6-Me-C
5
H
3
N-2-CH
2
Li prepared
in situ
by metallation of 2,6-dimethylpyridine with
n
-butyllithium afforded corresponding lithium amidinates [Li{6-Me-C
5
H
3
N-2-CH
2
C(NPr
i
)
2
}]•1/3THF (
1
) and [Li{6-MeC
5
H
3
N-2-CH
2
C(NCy)
2
}]
4
(
2
) containing new tridentate amidinate ligands. The salt metathesis reactions of Ln(BH
4
)
3
(THF)
3
(Ln = Y, Nd) with
1
(1: 1 molar ratio, THF) result in neutral amidinate bisborohydride complexes [Ln{6-Me-C
5
H
3
N-2-CH
2
C(NPr
i
)
2
}(BH
4
)
2
(THF)
2
} (Ln = Y (
3
), Nd (
4
)). According to X-ray data, both compounds are monomeric, terminal borohydride ligands being coordinated to the rare earth metal atom in η
3
-fashion. Nitrogen atoms of the pyridine fragments of amidinate ligands are not involved in complexation with metal cations. Complexes
3
and
4
in combination with [Ph
3
C][B(C
6
F
5
)
4
] and AlBu
3
i
(1: 1: 10 molar ratio) exhibit catalytic activity in isoprene polymerization.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s11172-016-1664-9</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1066-5285 |
| ispartof | Russian chemical bulletin, 2016-12, Vol.65 (12), p.2832-2840 |
| issn | 1066-5285 1573-9171 |
| language | eng |
| recordid | cdi_proquest_journals_1902498862 |
| source | SpringerLink Journals - AutoHoldings |
| subjects | Butyllithium Catalysis Catalytic activity Chemical synthesis Chemistry Chemistry and Materials Science Chemistry/Food Science Coordination compounds Fragments Full Articles Inorganic Chemistry Isoprene Ligands Lithium Metathesis Neodymium Nitrogen atoms Organic Chemistry Polymerization Rare earth elements Yttrium |
| title | Amidinate bisborohydride complexes of rare-earth metals [6-Me-C5H3N-2-CH2C(NPri)2]Ln(BH4)2THF2 (Ln = Y, Nd): synthesis, structure, and catalytic activity in isoprene polymerization |
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