The Cambridge Structural Database (CSD) is a database of over 900,000 organic and metal organic crystal structures. The database entries contain many different element types and the diversity of different element types that can been found in these structures has increased over the decades. Though the CSD you can also see how often different element types are present in structures and when different element types start to become frequently used in research. A simple way to look at the popularity of element types in small molecule crystal structures is to chart when the element first appeared in the CSD and how frequently it is observed in structures in the CSD, as can been seen below.

periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium

Periodic table of elements showing the year of first observation of each element in an organic or metal-organic crystalline environment. Years in brackets indicate that the element has been observed experimentally in a structure, but that particular element has no reported 3D atomic coordinates. Colour scale indicates frequency of observation of element within the CSD