摘要：

The synthesis and characterization of a neutral metal formyl complex (1) C/sub 5/H/sub 5/)Re(CO)(NO)(CHO) is reported, together with its subsequent reduction with borane to give (C/sub 5/H/sub 5/)Re(CO)(NO)(CH/sub 3/) and with lithium triethylborohydride to give the first diformyl metal complex (C/sub 5/H/sub 5/)Re(NO)(CHO)/sub 2//sup -/. In addition, the chemistry of (4) (C/sub 5/H/sub 5/)Re(CO)/sub 2/(NO)/sup +/ has been reinvestigated, and the new carboxy metal complex (C/sub 5/H/sub 5/)Re(CO)(NO)(CO/sub 2/H) has been prepared. This complex is an intermediate in the reaction of (4) with water to produce (C/sub 5/H/sub 5/)Re(CO)(NO)(H). The addition of a solution of triisoproxyborohydride in tetrahydrofuran to a stirred suspension of (4) at -78/sup 0/C results in a clear orange solution. The NMR and ir spectra indicate the formation of the neutral metal formyl complex. (1).

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