- 作者: 范鴻鈞 ; 李宗仁 ; Tahirov, Tahir 等
- 作者服務機構: 清華大學物理系
- 中文摘要: The nickel(II) and copper(II) complexes of meso- 3,6,6,9-tetramethyl-4,8-diazaundecane-2,10-dione dioxime(meso-HM-PAO) have an intramolecular hydrogen bond between cis oxime groups. [ Cu(meso-HM-PAO-H)(H/sub 2/O) ] (NCS) crystallizes in space group P 2/sub 1//n with a=7.692(1), b=12.028(2), c=20.235(3).ANG., .beta.=93.03(1).degree., Z=4 and Dc=1.46g/cm/sup 3/. The final R value for this complex was 0.034 for 2223 observed reflections with I.gtoreq.2.5.sigma.(I). The Cu(II) coordination is a distorted square pyramid. The Cu(II) ion is five-coordinated with the diazadioxime N atoms equatorial and water O atom axial. The Cu(II) is 0.12.ANG. from the equatorial plane towards the hydrate. The equatorial Cu-N distances span a narrow range, 1. 953(3) to 1.999(3).ANG.. The axial Cu-O distance is 2.314(3).ANG.. The thiocyanate group is almost linear. The intramolecular O...O hydrogen bond length is 2.479(4).ANG.. [ Ni(meso-HM-PAO-H) ] (ClO/sub 4/) crystallizes in space group P2/sub 1//c with a=14.774(3), b=12.752(3), c=20.035(4).ANG., .beta.=92.94(3).degree., Z=8 and Dc=1.51g/cm/sup 3/. The final R value for the complex was 0.053 for 4794 observed reflections with F.gtoreq.4.sigma.(F). The coordination about Ni(II) is a slightly distorted square plane. The Ni(II) ion is 0.0673(7).ANG. from the best plane of the four donor nitrogen atoms away from the perchlorate ion. The Ni-N distances span a narrow range 1.863(4) to 1.927(4).ANG.. There are two molecules per asymmetrical unit resulting in eight molecules being packed in a unit cell; they are bound together by van der Waals interactions. The O-H...O bonds of these complexes give characteristic infrared absorptions as well as chemical shift of the /sup 1/H NMR signal ( Ni complex).
- 英文摘要: --
- 中文關鍵字: X-Ray Structure; Nickel Complex; Copper Complex; Meso-Hm-Pao; Hydrogen Bonding; Crystal Structure; Oxime
- 英文關鍵字: X射線結構;鎳錯合物;銅錯合物;氫鍵;晶體結構;