Tetrachlorido[ N 2 , N 2′ -(dimethylsilanediyl)bis( N - tert -butyl-3-methylbenzimidamidato)-κ 2 N 2 , N 2′ ]hafnium(IV)

The symmetric title molecule, [Hf(C 26 H 40 N 4 Si)Cl 4 ], lies about a twofold rotation axis. The Hf IV and Si atoms lie on the rotation axis with all other atoms being in general positions. The Hf IV atom is six-coordinated by two N atoms from the N 2 , N 2′ -(dimethylsilanediyl)bis( N - tert -but...

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Bibliographic Details
Published inActa crystallographica. Section E, Structure reports online Vol. 69; no. 12; p. m654
Main Authors Wang, Tao, Zhao, Jian-Ping, Bai, Sheng-Di
Format Journal Article
LanguageEnglish
Published International Union of Crystallography 01.12.2013
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Summary:The symmetric title molecule, [Hf(C 26 H 40 N 4 Si)Cl 4 ], lies about a twofold rotation axis. The Hf IV and Si atoms lie on the rotation axis with all other atoms being in general positions. The Hf IV atom is six-coordinated by two N atoms from the N 2 , N 2′ -(dimethylsilanediyl)bis( N - tert -butyl-3-methylbenzimidamidate) ligand and four Cl − ions in a slightly distorted octahedral geometry. The two amidinate moieties are connected through the central Si atom with Si—N bond length of 1.762 (3) Å, generating the characteristic N—C—N—Si—N—C—N skeleton of a silyl-linked ansa -bis(amidine) species.
ISSN:1600-5368
1600-5368
DOI:10.1107/S1600536813030328