01575nas a2200157   4500008004100000020002000041022002000061245003300081210003300114260001400147300001200161520114000173100001701313700001901330856006801349       2017                        eng d  a978-149876757-6  a978-149876758-300aCarbene or C1 polymerization0 aCarbene or C1 polymerization  bCRC Press  a117-1363 a<p>As noted in Chapter 2, metal-catalyzed polymerization of carbon-carbon double bond (C=C) containing monomers is most widely known and today we produce roughly 180 million tons of polyolefins every year. 1 In this so-called olefin polymerization or vinyl insertion polymerization method, each monomer delivers two carbon (C2) atoms in each propagation step. Insertion polymerization of monomers delivering only one carbon unit in each chain growth step is named as C1 or carbene polymerization (see Figure 3.1). 2 In the recent past, C1 polymerization techniques are being viewed as a valuable alternative to the classical C2 polymerization methods. Not only this but also C1 polymerization offer distinct advantages over C2 polymerization and thus opens up new avenues for the development of new material with polymer properties that are very difficult to achieve using traditional C2 polymerization methods. In this chapter we will discuss the significance of C1 polymerization and the different methods used for C1 polymerization, will summarize the recent developments, and will highlight the elementary steps involved in it.</p>1 aDe Bruin, B.1 aChikkali, S.H.  uhttps://library.ncl.res.in/content/carbene-or-c1-polymerization01150nas a2200133   4500008004100000245003600041210003600077260001400113300000900127520077600136100001900912700001700931856006800948       2017                        eng d00aIntroduction to organometallics0 aIntroduction to organometallics  bCRC Press  a1-303 a<p>Polymers are gigantic macromolecules that are constructed by linking together a large number of smaller molecules called monomers through the process of polymerization. Polymer chemistry has evolved from a primitive, pragmatic discipline in the early 1920s to a well-established academic course today. The early efforts by Hermann Staudinger laid the foundation of rational polymer science and today it is nearly well understood as any other contemporary science. The fundamentals of chemistry and physics of polymers are detailed in many text books and we refer the reader to dedicated main stream polymer science books. 1 Nevertheless, the subject is forging ahead and is conquering new territories, and understanding of these new frontiers is equally important.</p>1 aChikkali, S.H.1 aNetalkar, S.  uhttps://library.ncl.res.in/content/introduction-organometallics