Protonation of the osmium(IV) hydrides
 (C
   5
 Me
   5
 )OsH
   3
 (L) with HBF
   4
  in
 diethyl ether afforded the cationic dihydrogen complexes
 [(C
   5
 Me
   5
 )Os(H
   2
 )H
   2
 (L)][BF
 
   4
 ], where L is PPh
   3
  1 or AsPh
   3
  2; a
 single-crystal neutron diffraction study of 1 reveals that the
 HâH distance is 1.014(11) Ã
.
                                    在
乙醚中,四氢化
锇(IV)
氢化物(C5Me5)OsH3(L)与
HBF4的质子化反应生成阳离子二氢复合物((C5Me5)Os(H2)H2(L)][BF4],其中L为PPh3 1或AsPh3 2;对1的单晶中子衍射研究表明,氢原子间的距离为1.014(11)Å。