| 摘要 |
Compounds according to formula: M1a[M2(CN)b(A)c]d.w M3De.x H2O. y L. z HnEm, wherein M1 represents at least one of Zn(II), Fe(II), Co(II), Ni(ii), Mn(II), Cu(II), Sn(II), or Pb(II); M2 represents at least one of Fe(II), Fe(III), Co(III), Cr(III), Mn(II), Mn(III), Ir(III), Rh(III), Ru(II), V(IV) or V(V); M3 represents M1 and/or M2; A, D and E each represent an anion which may be the same or different; L represents an alcohol, aldehyde, ketone, ether, ester, amide, nitrile or sulphide or mixtures thereof; a and d are numbers to satisfy the valency state of M1 and M2 in the double metal cyanide part of the general formula I; b and c are integers (b>c) which together with a and d provide the electroneutrality of the double metal cyanide part of the general formula I; e is an integer satisfying the valency state of M3; n and m are integers satisfying the electroneutrality of HE, and w is a number between 0.1 and 4; x is a number up to 20; y is a number between 0.1 and 6, and z is a number between 0.1 and 5, are novel and can be used as catalysts, preferably together with an initiator in the preparation of polyether alcohols and polyether polyols. The catalyst/initiator suspensions appear to be very stable.
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