Tanaka Shukichi, Akita Munetaka
Chemical Resources Laboratory Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku, Yokohama 226-8503 (Japan) Fax: (+81) 45-924-5230.
Angew Chem Int Ed Engl. 2001 Aug 3;40(15):2865-2867. doi: 10.1002/1521-3773(20010803)40:15<2865::AID-ANIE2865>3.0.CO;2-5.
Metal-metal bonds are not essential for multiply bridging hydride ligands. A tetranuclear μ -hydride complex [(μ -H)Rh (PNNP) (CO) ] (PNNP=3,5-bis(diphenylphosphanylmethyl)pyrazolate), in which the quadruply bridging hydrido ligand holds the four isolated metal centers together to form a tetrahedral metal array, has been prepared and characterized by spectroscopic methods and single-crystal X-ray diffraction.
金属-金属键对于多重桥连氢化物配体并非必不可少。一种四核μ-氢化物配合物[(μ-H)Rh(PNNP)(CO)]（PNNP = 3,5-双（二苯基膦基甲基）吡唑盐）已被制备出来，其中四重桥连氢化物配体将四个孤立的金属中心连接在一起形成四面体金属阵列，并通过光谱方法和单晶X射线衍射对其进行了表征。
