Patent ID: 7189865

Claim:
A compound of structural formula (I): or a solvate or hydrate thereof wherein: R 1 , R 2 , R 3 , R 5 , R 6 and R 7 are independently hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, substituted arylalkyl, cycloalkyl, substituted cycloalkyl, cycloheteroalkyl, substituted cycloheteroalkyl, heteroaryl, substituted heteroaryl, heteroarylalkyl, substituted heteroarylalkyl, heteroalkyl or substituted heteroalkyl; R 4 and R 8 are independently hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, substituted arylalkyl, cycloalkyl, substituted cycloalkyl, cycloheteroalkyl, substituted cycloheteroalkyl, heteroaryl, substituted heteroaryl, heteroarylalkyl, substituted heteroarylalkyl, heteroalkyl or substituted heteroalkyl or are absent when N is part of an aromatic ring; optionally, R 1 and R 2 taken together are alkyldiyl, substituted alkyldiyl, heteroalkyldiyl or substituted heteroalkyldiyl; optionally, R 5 and R 6 taken together are alkyldiyl, substituted alkyldiyl, heteroalkyldiyl or substituted heteroalkyldiyl; optionally, R 1 and R 2 taken together, R 2 and R 3 taken together and R 2 and R 4 taken together are alkyldiyl, substituted alkyldiyl, heteroalkyldiyl or substituted heteroalkyldiyl; optionally, R 5 and R 6 taken together, R 6 and R 7 taken together and R 6 and R 8 taken together are alkyldiyl, substituted alkyldiyl, heteroalkyldiyl or substituted heteroalkyldiyl; optionally, R 3 and R 7 taken together are alkyldiyl, substituted alkyldiyl, heteroalkyldiyl or substituted heteroalkyldiyl; and Y −2 is (Mo 2 S 12 ) −2 , (Mo 2 S 9 ) −2 , (Mo 2 S 7 ) −2 , (Mo 2 S 8 ) −2 , (Mo 2 S 11 ) −2 , (Mo 2 S 6 ) −2 or (Mo 2 S 13 ) −2 .