A sandwich compound is an organic substance that consists of two arene (ring) ligands and a metal connected by haptic, covalent connections. Substituted derivatives and heterocyclic derivatives of arenes all share the formula CnHn. It is called "sandwiched" because the metal is often sandwiched between the two rings. The metallocenes are a unique subclass of sandwich complexes. In a 1956 paper, J. D. Dunitz, L. E. Orgel, and R. A. Rich established the structure of ferrocene using X-ray crystallography, and used this information to coin the phrase "sandwich compound" in organometallic nomenclature. Robert Burns Woodward and Ernst Otto Fischer each independently predicted the proper structure some years prior, which calls for the molecule to include one iron atom squished between two parallel cyclopentadienyl rings.
Title : Application of vanadium, tantalum and chromium single-site zeolite catalysts in catalysis
Stanislaw Dzwigaj, Sorbonne University, France
Title : Morphological studies of quaternary alloys
Yarub Al Douri, European Academy of Sciences, Belgium
Title : The Concept and Implications of Low Carbon Green Growth
Dai Yeun Jeong, Asia Climate Change Education Center, Korea, Republic of
Title : Advances in heterogeneous catalysis for green conversion of propene to aldehydes and alcohols
Ram Sambhar Shukla, CSIR-Central Salt and Marine Chemicals Research Institute (CSMCRI), India
Title : Advanced nanostructures for carbon neutrality and sustainable H₂ energy
Tokeer Ahmad, Jamia Millia Islamia, India
Title : Influence of various catalysts on H₂ enhancement and CO2 capture during syngas upgrading
Enrico Paris, CREA-IT & DIAEE, Italy
Title :
Ramesh C Gupta, Nagaland University, India
Title : Nanomaterials to fight cancer, cysts, infection, and numerous other health ailments: Human data
Thomas J Webster, Brown University, United States
Title : Single cell RNA sequencing reveals vascular heterogeneity and immune crosstalk in the glioma blood tumor barrier
Ling Yin, Cornell University, United States
Title : Dimethyl ether synthesis from syngas over Cu-Zn/Al2O3 catalysts prepared using the Sol-Gel method
Uday Som, Shizuoka University, Japan