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. Author manuscript; available in PMC: 2011 Apr 5.
Published in final edited form as: Inorg Chem. 2010 Apr 5;49(7):3141–3151. doi: 10.1021/ic9017568

Table 3.

Relative Abundance of Members of Product Pairs Under Acidic, Neutral, and Basic Conditions (from Preparative Reaction Mixtures, Except As Noted)

form of complex at pH 7 composition (%)
pH 3-5 pH ~ 7 pH 9-12
[Re(CO)3(DTGH)-NNO]+ (5) 90 45 0
[Re(CO)3(DTG)-NNN] (6) 10 55 100
[Re(CO)3(UEDDAH)-ONO] (7) 96 2 0
[Re(CO)3(UEDDA)-NNO]− (8) 4 98 100
[Re(CO)3(DTMH)-NNO] (9) 100 45 0
[Re(CO)3(DTM)-NNN]- (10) 0 55 100
[Re(CO)3(DTAH)-NNO]+ (11) 98a 42 20b
[Re(CO)3(DTA)-NNN] (12) 2a 58 80b
a

Equilibrated mixture (pH ~ 2) at 100 °C, starting from isolated 12.

b

Equilibrated mixtures (pH ~ 8) at both 25 °C and 100 °C, starting from isolated 12.