astronomy

X. Peter Zhang

X. Peter Zhang is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand X. Peter Zhang rather than just read about it. In short: X. Peter Zhang (Xiao-Xiang Peter Zhang) is an organic chemist and professor of chemistry at Boston College.

Key takeaways

X. Peter Zhang belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect X. Peter Zhang to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of X. Peter Zhang from memory before moving on to harder problems.

Reference excerpt

X. Peter Zhang (Xiao-Xiang Peter Zhang) is an organic chemist and professor of chemistry at Boston College. His research focuses on stereoselective organic synthesis, radical chemistry, and catalysis, including the development of metalloradical catalysis using cobalt and iron complexes.

Education and career Zhang received a B.S. from Anhui Normal University in 1985 and an M.S. from Beijing Normal University in 1988. He earned his Ph.D. in chemistry from the University of Pennsylvania in 1996 under the supervision of Bradford B. Wayland. After completing his doctorate, Zhang held postdoctoral appointments at the Massachusetts Institute of Technology, first with Stephen J. Lippard from 1996 to 1999 and then with Stephen L. Buchwald from 1999 to 2001. He began his academic career at the University of Tennessee in 2001. He later joined the University of South Florida, where he was promoted to full professor, before joining the faculty at Boston College in 2015.

Research Zhang's research focuses on the following areas:

Metalloradical catalysis and catalyst design. Zhang's group develops metalloradical catalysis as an approach for controlling radical reactivity and stereoselectivity in organic synthesis. A major component of this work involves cobalt(II) porphyrin complexes and chiral porphyrin ligand design, including modular chiral porphyrins and D2-symmetric chiral amidoporphyrins. Asymmetric radical transformations of alkenes. Zhang's laboratory has applied cobalt-based metalloradical catalysis to stereoselective alkene functionalization, including cyclopropanation and aziridination. C–H functionalization and C–N bond formation. Zhang's group has reported metalloradical methods for C–H functionalization, including asymmetric C–H alkylation through 1,4-hydrogen atom abstraction, intermolecular radical C–H amination, and allylic C–H amination. Other reported applications from the group include radical and radical/ionic approaches to β-functionalized amines and radical dearomative conjugate amination.

Awards and honors ORAU Ralph Powe Junior Faculty Award, 2003 NSF CAREER Award, 2006 Thieme Chemistry Journals Award, 2009

References

Worked examples

Example 1 — a first encounter with X. Peter Zhang

Start with the simplest possible case. Write down what X. Peter Zhang claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to X. Peter Zhang before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about X. Peter Zhang ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of X. Peter Zhang

In research: X. Peter Zhang appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses X. Peter Zhang in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: X. Peter Zhang is common in secondary-school and first-year university syllabi. It links to neighbouring topics 21st-century Chinese chemists, Anhui Normal University alumni, Beijing Normal University alumni, so understanding it makes those chapters shorter.
In everyday life: Look for X. Peter Zhang outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study X. Peter Zhang in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what X. Peter Zhang means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain X. Peter Zhang out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is X. Peter Zhang in simple terms?

X. Peter Zhang (Xiao-Xiang Peter Zhang) is an organic chemist and professor of chemistry at Boston College.

Why does X. Peter Zhang matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study X. Peter Zhang?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on X. Peter Zhang.