TY - JOUR
T1 - Nonorthogonal dilithium-1,3-biborataallenes containing planar-tetracoordinate carbon atoms
AU - Sahin, Yüksel
AU - Hartmann, Michael
AU - Geiseler, Gertraud
AU - Schweikart, Dieter
AU - Balzereit, Christian
AU - Frenking, Gernot
AU - Massa, Werner
AU - Berndt, Armin
PY - 2001/7/16
Y1 - 2001/7/16
N2 - Deviations of up to 36° from the orthogonality of the planes of the terminal B atoms of the allene skeleton and their neighbors (ipso-C atoms) are observed in tetraaryl-1,3-diborataallenes of contact-ion triples 1. The unusual geometries are caused by steric hindrance between ortho-methyl groups, which is induced by interactions of the lithium counterions with the π electrons of the aryl substituents, as well as by small barriers to planarization of 1,3-diborataallenes. Ar = for example, 2,3,5,6-tetramethylphenyl.
AB - Deviations of up to 36° from the orthogonality of the planes of the terminal B atoms of the allene skeleton and their neighbors (ipso-C atoms) are observed in tetraaryl-1,3-diborataallenes of contact-ion triples 1. The unusual geometries are caused by steric hindrance between ortho-methyl groups, which is induced by interactions of the lithium counterions with the π electrons of the aryl substituents, as well as by small barriers to planarization of 1,3-diborataallenes. Ar = for example, 2,3,5,6-tetramethylphenyl.
KW - Anions
KW - Boron
KW - Coordination chemistry
KW - Density functional calculations
KW - Steric hindrance
UR - http://www.scopus.com/inward/record.url?scp=0035898438&partnerID=8YFLogxK
U2 - 10.1002/1521-3773(20010716)40:14<2662::AID-ANIE2662>3.0.CO;2-V
DO - 10.1002/1521-3773(20010716)40:14<2662::AID-ANIE2662>3.0.CO;2-V
M3 - 文章
AN - SCOPUS:0035898438
SN - 1433-7851
VL - 40
SP - 2662
EP - 2665
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 14
ER -