Comparison of mol­ecular structures of cis-bis­[8-(di­methyl­phosphan­yl)quinoline]­nickel(II) and -platinum(II) complex cations

Mori, Masatoshi; Suzuki, Takayoshi

doi:10.1107/s2056989020014437

Permalink : http://escholarship.lib.okayama-u.ac.jp/61487

ID	61487
フルテキストURL	fulltext.pdf 1.09 MB
著者	Mori, Masatoshi Graduate School of Natural Science and Technology, Okayama University Suzuki, Takayoshi Research Institute for Interdisciplinary Science, Okayama University ORCID Kaken ID publons researchmap
抄録	The crystal structures of the complexes (SP-4-2)-cis-bis[8-(dimethylphosphanyl)quinoline-κ2 N,P]nickel(II) bis(perchlorate) nitromethane monosolvate, [Ni(C11H12NP)2](ClO4)2·CH3NO2 (1), and (SP-4-2)-cis-bis[8-(dimethylphosphanyl)quinoline-κ2 N,P]platinum(II) bis(tetrafluoroborate) acetonitrile monosolvate, [Pt(C11H12NP)2](BF4)2·C2H3N (2), are reported. In both complex cations, two phosphanylquinolines act as bidentate P,N-donating chelate ligands and form the mutually cis configuration in the square-planar coordination geometry. The strong trans influence of the dimethylphosphanyl donor group is confirmed by the Ni—N bond lengths in 1, 1.970 (2) and 1.982 (2) Å and, the Pt—N bond lengths of 2, 2.123 (4) and 2.132 (4) Å, which are relatively long as compared to those in the analogous 8-(diphenylphosphanyl)quinoline complexes. Mutually cis-positioned quinoline donor groups would give a severe steric hindrance between their ortho-H atoms. In order to reduce such a steric congestion, the NiII complex in 1 shows a tetrahedral distortion of the coordination geometry, as parameterized by τ4 = 0.199 (1)°, while the PtII complex in 2 exhibits a typical square-planar coordination geometry [τ4 = 0.014 (1)°] with a large bending deformation of the ideally planar Me2Pqn chelate planes. In the crystal structure of 2, three F atoms of one of the BF4 − anions are disordered over two sets of positions with refined occupancies of 0.573 (10) and 0.427 (10).
キーワード	8-quinolylphosphane asymmetrical bidentate ligand square-planar coordination tetrahedral distortion trans influence trans influence
発行日	2020
出版物タイトル	Acta Crystallographica Section E Crystallographic Communications
巻	E76巻
出版者	International Union of Crystallography (IUCr)
開始ページ	1813
終了ページ	1817
ISSN	2056-9890
資料タイプ	学術雑誌論文
言語	英語
OAI-PMH Set	岡山大学
論文のバージョン	publisher
PubMed ID	33520259
DOI	10.1107/s2056989020014437
Web of Science KeyUT	000600542500004
ライセンス	https://creativecommons.org/licenses/by/4.0/
助成機関名	日本学術振興会
助成番号	K05146

Comparison of mol­ecular structures of cis-bis­[8-(di­methyl­phosphan­yl)quinoline]­nickel(II) and -platinum(II) complex cations

Comparison of molecular structures of cis-bis[8-(dimethylphosphanyl)quinoline]nickel(II) and -platinum(II) complex cations