Conformational Diversity
Conformational Diversity - Related Videos
01:20
Conformity
0 Views •
2020
Conformity is the change in a person’s behavior to go along with the group, even if that person does not agree with the group. Asch’s Original Study Solomon Asch conducted several experiments in the 1950s to determine how people are affected by the thoughts and behaviors of other people. In one study, a group of participants was shown a series of printed line segments of different lengths: a, b, and c. Participants were then shown a fourth line segment: x. They were asked to identify which...
06:40
Plant Diversity - Concepts
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2019
From Water to Land Kingdom Plantae first appeared about 410 million years ago as green algae transitioned from water to land. Though challenging, this transition benefited early colonizers in several ways. Initially, most living organisms (including plants and animals) were ocean dwelling, making aquatic environments crowded and highly competitive. In contrast, land was a relatively uncolonized environment with ample resources and little to no predators or competitors. Terrestrial environments...
05:49
Community Diversity - Concepts
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2019
Populations do not live in isolation; thus, every population interacts with others in certain ways. These interactions give rise to a network of populations. Hence, an ecological community is composed of such population networks of various species interacting with each other within the same area. These biological, or biotic, components may also closely interact with non-living, or abiotic, components, forming an ecosystem. Ecosystems may be as small as the microbial communities inside the human...
13:04
Community Diversity - Student Protocol
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2019
Measuring Biodiversity in Areas with Different Disturbance Regimes ExpandNOTE: In this experiment, you will compare the biodiversity in a less disturbed area against a more highly disturbed area. HYPOTHESES: The experimental hypothesis could be that a less disturbed area will contain a greater diversity of species than a highly disturbed area. The null hypothesis could be that there will be no difference in diversity between less disturbed and highly disturbed areas. To begin, divide into...
08:55
A Minority of One: Conformity to Group Norms
0 Views •
2023
Source: William Brady & Jay Van Bavel—New York University It is obvious that we are influenced by those around us, but in the early to mid 1900's, psychologists began to study how potent social influence can be on our thoughts and behaviors. Motivated in part by attempts to explain the behaviors of Nazi soldiers in World War II, one topic of considerable interest at the time in psychology was conformity, the phenomenon in which people match their attitudes, behaviors, or beliefs to group...
FAQs
Steric interactions, electronic effects, solvent, and temperature all influence relative conformer energies. Steric crowding can make one arrangement less favorable, while electronic effects may stabilize another. Solvent can alter these preferences, and temperature affects which arrangements are sufficiently populated to matter. Considering these factors explains why one conformer predominates under one set of conditions but not another.
Single-bond rotation changes the relative orientation of groups around a bond, whereas ring flipping changes substituent orientations within a cyclic structure. These movements can alter torsional strain and other interactions without requiring covalent bond breaking. Distinguishing the two processes helps chemists relate a molecule’s flexibility or cyclic behavior to the three-dimensional arrangements it can access.
Conformers with less favorable relative energies may still form but remain transient because competing arrangements are more stable under the same conditions. Their presence depends on the balance among steric interactions, electronic effects, solvent, and temperature. Even when a conformer does not predominate, its temporary formation can influence molecular reactivity, recognition, or stereochemical behavior.
A conformational analysis should compare the three-dimensional arrangements available to the molecule, the relative energies of those arrangements, and the structural interactions that favor or disfavor each one. For cyclic compounds, substituent orientations and torsional strain are especially relevant. Examining solvent and temperature as additional conditions helps connect the structural comparison with conformer predominance in practice.
Different conformers present different three-dimensional arrangements to a reacting environment, so their relative abundance can influence which reaction pathway is favored. The resulting preference may appear as reaction selectivity or stereochemical behavior. Evaluating conformer energies and structural orientations therefore helps explain why a molecule may react preferentially through one accessible arrangement rather than another.
Recognition depends on how molecular shape and substituent orientation match an interacting partner. Because conformational diversity allows multiple arrangements, the relevant conformer may be the one that best supports that interaction, even if other arrangements are also accessible. This perspective helps explain biomolecular interactions and informs pharmaceutical design by connecting three-dimensional structure with molecular recognition.