The International Symposium on Metal Complexes 2012 (ISMEC2012) is also the XXIII Italian-Spanish Congress on Thermodynamics of Metal Complexes, and it will be held in Lisbon, Portugal, from 18th to 22nd of June 2012. This meeting is mainly focused on the chemistry of metal complex formation, with prospective applications on environmental, biomedical, analytical, inorganic and physical-chemical fields. ISMEC2012 will provide a valuable discussion forum to exchange knowledge on the most recent advances in the above related fields. International Simposium on Metal Complexes 18-22 June 2012, Lisbon, PORTUGAL   16/5/2012 The deadline for submitting the manuscript for Dalton Trans. was extended to September 22nd 5/4/2012 Extended dealines for the Early registration and Abstract submission, to April 15th