Carbon dioxide binding at a Ni/Fe center: synthesis and characterization of Ni(η1-CO2-κC) and Ni-μ-CO2-κC:κ2 O,O′-Fe† †Electronic supplementary information (ESI) available: Characterization data for 3 and 5. CCDC 1492006 and 1492007. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6sc03450k Click here for additional data file. Click here for additional data file.

Carbon dioxide binding at a Ni/Fe center: synthesis and characterization of Ni(η1-CO2-κC) and Ni-μ-CO2-κC:κ2O,O'-Fe.

The degree of CO2 activation can be tuned by incorporating a distinct electronic coordination environment at the nickel center. A mononuclear nickel carboxylate species (Ni-CO2, 3) and a dinuclear nickel-iron carboxylate species (Ni-CO2-Fe, 5) were prepared. The structure of 3 reveals a rare η1-κC binding mode of CO2, while that of 5 shows bridging CO2 binding (μ2-κC:κ2O,O') between the nickel ...

Pushing the limits of magnetic anisotropy in trigonal bipyramidal Ni(ii)† †Electronic supplementary information (ESI) available. CCDC 1059709. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c5sc02854j Click here for additional data file. Click here for additional data file.

Profluorescent verdazyl radicals – synthesis and characterization† †Electronic supplementary information (ESI) available. CCDC 1051008–1051011. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c5sc00724k Click here for additional data file. Click here for additional data file.

Tandem redox mediator/Ni(ii) trihalide complex photocycle for hydrogen evolution from HCl† †Electronic supplementary information (ESI) available: Experimental procedures and time-dependent photochemical data; transient absorption spectroscopy and electrochemical experimental details. CCDC 992218–992221. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c4sc02357a Click here for additional data file. Click here for additional data file.

Asymmetric synthesis of cyclopentanes bearing four contiguous stereocenters via an NHC-catalyzed Michael/Michael/esterification domino reaction† †Electronic supplementary information (ESI) available: Experimental procedures and characterization date (NMR, IR, MS, HPLC). CCDC 1437686. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c5cc09581f Click here for additional data file. Click here for additional data file.

An NHC-catalyzed Michael/Michael/esterification domino reaction via homoenolate/enolate intermediates for the asymmetric synthesis of tetrasubstituted cyclopentanes bearing four contiguous stereocenters is described. A variety of α,β-unsaturated aldehydes and 2-nitroallylic acetates react well with good domino yields and high stereoselectivities.