1: Introduction to Organic Molecules (Alkanes)
- Page ID
- 558278
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)- 1.1: Organic Chemistry
- This page distinguishes between organic and inorganic compounds, detailing their historical development. Organic compounds are carbon-based and initially linked to living organisms, while inorganic compounds include other elements. It mentions Friedrich Wöhler's synthesis of urea, which challenged the idea of a unique "vital force.
- 1.2: Families of Organic Molecules - Functional Groups
- This page reviews the classification of organic molecules into families by their functional groups, such as alkanes, alkenes, and alkynes, which dictate their chemical behavior. It underlines the significance of functional groups in the study of biomolecules and pharmaceuticals. A table is provided that lists the organic families, their functional groups, examples, and naming guidelines. Understanding these functional groups is crucial for effectively studying organic chemistry.
- 1.3: Branched-Chain Alkanes
- This page discusses the structure of alkanes, focusing on butane (C4H10) and its branched isomer isobutane, illustrating isomerism. It explains that lower alkanes like methane, ethane, and propane lack isomers due to simpler structures. The text also presents pentane and its isomers, isopentane and neopentane, emphasizing their unique properties despite having the same molecular formula. Straight-chain alkanes are noted, with butane referred to as n-butane, though the prefix is often omitted.
- 1.4: Condensed Structural and Line-Angle Formulas
- This page describes three types of chemical formulas for organic compounds: molecular formulas indicate atom types and numbers; structural formulas show atom arrangement and bonding; and condensed formulas simplify this by aligning hydrogen with carbon atoms. Line-angle formulas further condense the representation by suggesting carbon at line ends and corners, with hydrogen atoms implicitly included to fulfill carbon's bonding needs.
- 1.5: IUPAC Nomenclature
- This page explains the IUPAC naming system for alkanes, detailing key concepts like the longest continuous chain (LCC) principle, alkyl group nomenclature, and numbering rules for substituents. It highlights the complexities of naming isomers as carbon count increases and offers simplified rules and examples for practical application, aiming to ensure that each unique compound is assigned a distinct name.
- 1.6: Cycloalkanes
- This page explains cycloalkanes, cyclic hydrocarbons made of carbon rings, starting with cyclopropane (C3H6), formerly used as an anesthetic but now avoided due to explosiveness. Cycloalkanes are named with "cyclo-" as a prefix, and share properties with noncyclic alkanes; cyclopentane and cyclohexane are notably stable. Cyclopropane exhibits strain in its ring structure due to small bond angles.
- 1.7: Halogenated Hydrocarbons
- This page discusses halogenated hydrocarbons, formed through halogen-alkane reactions, and their naming conventions. It lists examples and uses, emphasizing health risks associated with chlorinated hydrocarbons, particularly toxicity and cancer concerns. The text also addresses the effects of chlorofluorocarbons on the ozone layer and highlights the transition to safer alternatives.
- 1.8: Physical Properties of Alkanes
- This page covers the physical properties of alkanes, emphasizing their nonpolarity, low density, and boiling point trends with molar mass. It notes their insolubility in water and effectiveness as solvents for low-polarity substances. The significance of alkanes extends to petroleum products, lipid studies, and cell membranes, along with safety concerns regarding fire hazards related to gas leaks.
- 1.9: Chemical Properties of Alkanes
- This page discusses alkanes, nonpolar hydrocarbons known for their low reactivity and classified as paraffins. They primarily undergo two reactions: combustion, which produces carbon dioxide, water, and heat (with incomplete combustion potentially generating carbon monoxide), and halogenation, where they react with chlorine or bromine in the presence of ultraviolet light or heat, resulting in halogenated compounds.