Comparisons of zinc with cadmium in N2S2 coordination and as S-bonded adducts to tungsten carbonyls

作者：Denny Jason A; Foley William S; Almaraz Elky; Reibenspies Joseph H; Bhuvanesh Nattamai; Daren**ourg Marcetta Y^*

来源：Dalton Transactions, 2012, 41(1): 143-148.

DOI：10.1039/c1dt11336d

The synthesis and characterization of bis-mercaptoethanediazaheptane cadmium(II) is reported and compared to the analogous zinc complex. Of significance is the dimeric form of the [Zn(N2S2)](2) complex achieves penta-coordination about zinc through a bridging thiolate whereas cadmium engages two thiolate as S-bridges resulting in hexa-coordination about cadmium within a coordination polymer whose X-ray crystal structure is reported here. In the presence of W(CO)(5), this polymer breaks up, generating dimeric [Cd(N2S2)](2) with two W(CO)(5) units appended to the terminal thiolates, a feat that is not observed for the zinc dimer analogue. The greater thiophilicity of cadmium over zinc is noted in several features of these complexes.

• 出版日期2012