메뉴 건너뛰기




Volumn 26, Issue 1, 2007, Pages 155-159

A disilane with a hypercoordinate silicon atom: Coordination of an imine ligand versus Si-Si bond splitting

Author keywords

[No Author keywords available]

Indexed keywords

AMINES; CHEMICAL BONDS; MOLECULAR STRUCTURE; SUBSTITUTION REACTIONS; SYNTHESIS (CHEMICAL);

EID: 33846203925     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om060698a     Document Type: Article
Times cited : (31)

References (41)
  • 15
    • 0000035505 scopus 로고    scopus 로고
    • The progress between TBP and SQP coordination geometry (% TBP) was determined using the equation % TBP = 100%(Angle 1 - Angle 2)/ 60°, in which Angle 1 is the widest angle X-Si-Y within the pentacoordinate geometry (i.e., the axial angle) and Angle 2 is the widest angle in the equatorial plane with respect to the axis defined with Angle 1. This general equation was derived from the special form % TBP = 100%(|Angle N-Si-N - Angle O-Si-O|)/60°, which has been used by Kost et al.: Kost, D.; Kingston, V.; Gostevskii, B.; Ellern, A.; Stalke, D.; Walfort, B.; Kalikhman, I. Organometallics 2002, 21, 2293.
    • The progress between TBP and SQP coordination geometry (% TBP) was determined using the equation % TBP = 100%(Angle 1 - Angle 2)/ 60°, in which Angle 1 is the widest angle X-Si-Y within the pentacoordinate geometry (i.e., the axial angle) and Angle 2 is the widest angle in the equatorial plane with respect to the axis defined with Angle 1. This general equation was derived from the special form % TBP = 100%(|Angle N-Si-N - Angle O-Si-O|)/60°, which has been used by Kost et al.: Kost, D.; Kingston, V.; Gostevskii, B.; Ellern, A.; Stalke, D.; Walfort, B.; Kalikhman, I. Organometallics 2002, 21, 2293.
  • 23
    • 33845184519 scopus 로고    scopus 로고
    • Other di- and oligosilanes bearing pentacoordinate Si atoms with an equatorially situated Si-Si bond were reported by (respective Si-Si bond lengths in Å): (a) Kira, M.; Sato, K.; Kabuto, C.; Sakurai, H. J. Am. Chem. Soc. 1989, 111, 3747 [2.403(3)].
    • Other di- and oligosilanes bearing pentacoordinate Si atoms with an equatorially situated Si-Si bond were reported by (respective Si-Si bond lengths in Å): (a) Kira, M.; Sato, K.; Kabuto, C.; Sakurai, H. J. Am. Chem. Soc. 1989, 111, 3747 [2.403(3)].
  • 24
    • 33846240978 scopus 로고    scopus 로고
    • Reference 9 [2.3480(9) and 2.33538
    • (b) Reference 9 [2.3480(9) and 2.3353(8)].
  • 25
    • 0033516291 scopus 로고    scopus 로고
    • El-Sayed, I.; Hatanaka, Y.; Muguruma, C.; Shimada, S.; Tanaka, M.; Koga, N.; Mikami, M. J. Am. Chem. Soc. 1999, 121, 5095 [2.329(1), 2.3395(6), 2.3362(5), 2.3447(7)].
    • (c) El-Sayed, I.; Hatanaka, Y.; Muguruma, C.; Shimada, S.; Tanaka, M.; Koga, N.; Mikami, M. J. Am. Chem. Soc. 1999, 121, 5095 [2.329(1), 2.3395(6), 2.3362(5), 2.3447(7)].
  • 26
    • 0035913753 scopus 로고    scopus 로고
    • Toshimitsu, A.; Saeki, T.; Tamao, K. J. Am. Chem. Soc. 2001, 123, 9210 [2.348(1)].
    • (d) Toshimitsu, A.; Saeki, T.; Tamao, K. J. Am. Chem. Soc. 2001, 123, 9210 [2.348(1)].
  • 27
    • 0034928888 scopus 로고    scopus 로고
    • Toshimitsu, A; Hirao, S.; Saeki, T.; Asahara, M.; Tamao, K. Heteroat. Chem. 2001, 12, 392 [2.333(1), 2.368(1), 2.3563(6), 2.3711(9)]. Those with bulky substituants e.g., triphenylsilyl group, ref a] exhibit notably longer equatorial Si-Si bonds. Most of the Si-Si interatomic distances, however, are close to 2.35 Å, the Si-Si bond length found in 4.
    • (e) Toshimitsu, A; Hirao, S.; Saeki, T.; Asahara, M.; Tamao, K. Heteroat. Chem. 2001, 12, 392 [2.333(1), 2.368(1), 2.3563(6), 2.3711(9)]. Those with bulky substituants (e.g., triphenylsilyl group, ref a] exhibit notably longer equatorial Si-Si bonds. Most of the Si-Si interatomic distances, however, are close to 2.35 Å, the Si-Si bond length found in 4.
  • 33
    • 33846239052 scopus 로고    scopus 로고
    • 29Si INEPT NMR spectrum of the filtrate was recorded. It exhibits various signals between 36 and -94 ppm.
    • 29Si INEPT NMR spectrum of the filtrate was recorded. It exhibits various signals between 36 and -94 ppm.
  • 34
    • 33846230667 scopus 로고    scopus 로고
    • In a modified reaction, addition of 1 equiv of tetrachlorodimethyldisilane to a solution of Et3N, 2 equiv of ligand 3, however, produced a mixture that exhibits various 29Si NMR signals between -84 and -94 ppm. Several smaller further signals can be found between 0 and -63 ppm. Compound 8, 81.5 ppm represents only a minor component of this mixture
    • 29Si NMR signals between -84 and -94 ppm. Several smaller further signals can be found between 0 and -63 ppm. Compound 8 (-81.5 ppm) represents only a minor component of this mixture.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.