Organometallic chemistry : Volume 43 3.1.1 Group I and II and Zn catalysts 3.1.2 Main group catalysts 3.1.3 Transition metal catalysts for the ROP of cyclic esters 3.2 Heterometallic catalysts 4 Conclusions References Design of gadolinium complexes asmagnetic resonance imaging contra stagents 1 Introduction 2 Principles of magnetic resonance imaging 2.1 How MRI works 2.2 Relaxation times T1 T2 3 How MRI contrast agents work 3.1 Properties of Gd3+ clinical GdCAs toxicity 3.2 Commercial GdCAs Advances in the chemistry of metal metalquadruple bonds 2015 2020 1 Introduction Organometallic compounds of rutheniumand their application in chemotherapy 1 Introduction 2 Arene ruthenium with biology activity 2.1 Arene ruthenium with mono dentate ligands 2.1.1 N donor ligands 2.1.2 Phosphorus as coordinating atom 2.2 Arene ruthenium complexes with a bidentate ligand 2.2.1 N N bidentate ligands 2.2.2 N O bidentate ligand 2.2.3 Thiol ligands 2.3 Other complexes 3 Anticancer mechanism of arene ruthenium(II) complexes 3.1 Apoptosis inducers 3.2 Inhibitors against tumor migration and invasion 3.3 Cell phase arrest inducers 1.1 The quadruple bond 2 Electron transfer 2.1 Ground state mixed valency 2.2 Ligand based redox activity 2.3 Mixed valency across hydrogen bonds 2.4 Excited state electron transfer 3 Reactivity 3.1 The quintuple bond and varying bond order through reactivity 3.2 Reactivity of quadruply bonded complexes 3.3 Catalysis 4 Coordination chemistry 4.1 Multimetallic structures and extended arrays 4.2 Tuning electronic structure 4.3 Lewis acids at the axial position: extended metal atom chains 5 Conclusions References 3.4 DNA binder 4 Conclusions and outlook Acknowledgments References Multinuclear catalysts for the ring openingpolymerisation of cyclic esters 1 Introduction 2 Ring opening polymerisation of lactide 2.1 Homometallic catalysts for the ROP of lactide 2.1.1 Group I and II and Zn catalysts 2.1.2 Main group catalysts 2.1.3 Transition metal catalysts 2.1.4 f block catalysts 2.2 Heterometallic catalysts for the ROP of lactide 3 Ring opening polymerisation of other cyclic esters 3.1 Homometallic catalysts for the ROP of cyclic esters Cover Contents Author biographies Abbreviations Recent advances in chromiumcoordination chemistry: luminescentmaterials and photocatalysis 1 Introduction and scope 2 Notes 3 Photophysics of Cr(III) complexes 4 Homoleptic polypyridyl complexes of Cr(III) 5 Heteroleptic polypyridyl complexes of Cr(III) 5 Heteroleptic polypyridyl complexes of Cr(III) 7 Macrocyclic bis cyano complexes of Cr(III) 8 Photoluminescent Cr(0) complexes 9 Cr(III) complexes in photoredox catalysis 10 Concluding remarks References Providing an invaluable resource this volume contains analysed evaluated and distilled information on the latest in organometallic and coordination chemistry research and emerging fields. With the increase in volume velocity and variety of information researchers can find it difficult to keep up to date with the literature in their field. The reviews range in scope and include recent advances in chromium coordination chemistry borohydride and borane ligand architectures supported by heterocyclic units and discussion on behaviours of novel ruthenium(II) complexes. This volume is a key reference for researchers in academic and industrial settings