start-ver=1.4
cd-journal=joma
no-vol=E76
cd-vols=
no-issue=
article-no=
start-page=1813
end-page=1817
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=2020
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Comparison of mol­ecular structures of cis-bis­[8-(di­methyl­phosphan­yl)quinoline]­nickel(II) and -platinum(II) complex cations
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=<jats:p>The crystal structures of the complexes (<jats:italic>SP</jats:italic>-4-2)-<jats:italic>cis</jats:italic>-bis[8-(dimethylphosphanyl)quinoline-κ<jats:sup>2</jats:sup>
                  <jats:italic>N</jats:italic>,<jats:italic>P</jats:italic>]nickel(II) bis(perchlorate) nitromethane monosolvate, [Ni(C<jats:sub>11</jats:sub>H<jats:sub>12</jats:sub>NP)<jats:sub>2</jats:sub>](ClO<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>·CH<jats:sub>3</jats:sub>NO<jats:sub>2</jats:sub> (<jats:bold>1</jats:bold>), and (<jats:italic>SP</jats:italic>-4-2)-<jats:italic>cis</jats:italic>-bis[8-(dimethylphosphanyl)quinoline-κ<jats:sup>2</jats:sup>
                  <jats:italic>N</jats:italic>,<jats:italic>P</jats:italic>]platinum(II) bis(tetrafluoroborate) acetonitrile monosolvate, [Pt(C<jats:sub>11</jats:sub>H<jats:sub>12</jats:sub>NP)<jats:sub>2</jats:sub>](BF<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>·C<jats:sub>2</jats:sub>H<jats:sub>3</jats:sub>N (<jats:bold>2</jats:bold>), are reported. In both complex cations, two phosphanylquinolines act as bidentate <jats:italic>P,N</jats:italic>-donating chelate ligands and form the mutually <jats:italic>cis</jats:italic> configuration in the square-planar coordination geometry. The strong <jats:italic>trans</jats:italic> influence of the dimethylphosphanyl donor group is confirmed by the Ni—N bond lengths in <jats:bold>1</jats:bold>, 1.970 (2) and 1.982 (2) Å and, the Pt—N bond lengths of <jats:bold>2</jats:bold>, 2.123 (4) and 2.132 (4) Å, which are relatively long as compared to those in the analogous 8-(diphenylphosphanyl)quinoline complexes. Mutually <jats:italic>cis</jats:italic>-positioned quinoline donor groups would give a severe steric hindrance between their <jats:italic>ortho</jats:italic>-H atoms. In order to reduce such a steric congestion, the Ni<jats:sup>II</jats:sup> complex in <jats:bold>1</jats:bold> shows a tetrahedral distortion of the coordination geometry, as parameterized by τ<jats:sub>4</jats:sub> = 0.199 (1)°, while the Pt<jats:sup>II</jats:sup> complex in <jats:bold>2</jats:bold> exhibits a typical square-planar coordination geometry [τ<jats:sub>4</jats:sub> = 0.014 (1)°] with a large bending deformation of the ideally planar Me<jats:sub>2</jats:sub>Pqn chelate planes. In the crystal structure of <jats:bold>2</jats:bold>, three F atoms of one of the BF<jats:sub>4</jats:sub>
                  <jats:sup>−</jats:sup> anions are disordered over two sets of positions with refined occupancies of 0.573 (10) and 0.427 (10).</jats:p>
en-copyright=
kn-copyright=

en-aut-name=MoriMasatoshi
en-aut-sei=Mori
en-aut-mei=Masatoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=SuzukiTakayoshi
en-aut-sei=Suzuki
en-aut-mei=Takayoshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

affil-num=1
en-affil=Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=2
en-affil=Research Institute for Interdisciplinary Science, Okayama University
kn-affil=
en-keyword=8-quinolylphosphane
kn-keyword=8-quinolylphosphane
en-keyword=asymmetrical bidentate ligand
kn-keyword=asymmetrical bidentate ligand
en-keyword=square-planar coordination
kn-keyword=square-planar coordination
en-keyword=tetra­hedral distortion
kn-keyword=tetra­hedral distortion
en-keyword=trans influence
kn-keyword=trans influence
en-keyword=trans influence
kn-keyword=trans influence
END