endohedral fullerene

Cage assignment

Record the assigned fullerene cage and distinguish established structure from unresolved isomer identity.

1. What carbon count and cage connectivity or isomer designation identify the host? definition
2. Which observations support the cage assignment, and could another cage isomer fit them? provenance
3. Is the cage closed and intact, or is the material an opened intermediate or externally modified derivative? boundary

Guest stoichiometry

Specify the guest without assuming that every enclosed species is a single metal atom.

1. Which atoms, ions, molecules or clusters are enclosed, and how many occur in each assigned species? definition
2. Does the guest@cage notation distinguish guest count, relevant isotopes and cage identity unambiguously? boundary
3. Which composition measurements support the proposed guest formula? measurement

Encapsulation assignment

Record the evidence supporting internal guest location and the alternatives it excludes.

1. Which measurements distinguish an internal guest from an external adduct or co-purified guest-containing impurity? measurement
2. Does the assignment rely on composition alone, or is there independent structural or spectroscopic support? provenance
3. What additional observation would resolve the strongest remaining alternative to encapsulation? action

Guest configuration

Record whether the guest configuration is resolved, disordered, dynamic or inferred.

1. What guest position, orientation or internal cluster geometry is supported, with what uncertainty? measurement
2. Can the observations distinguish guest motion from static disorder or a mixture of configurations? boundary
3. Under which temperature, phase and measurement timescale was the configuration characterized? provenance

Charge and spin

Distinguish measured electronic responses from models of charge transfer and spin distribution.

1. What overall charge and spin state are supported for the characterized species? measurement
2. Which observations or calculations support a proposed guest-to-cage charge distribution? provenance
3. Which assignments describe the enclosed species, and which have merely been borrowed from the free guest? boundary

Property fingerprint

Record spectroscopic, magnetic or electrochemical signatures together with reference materials and conditions.

1. Which observed signals distinguish this endohedral species from its empty cage and likely impurities? measurement
2. What solvent, temperature, concentration, field or reference standard is needed to interpret each reported response? provenance
3. Which response is sufficiently selective and reproducible to verify identity before a proposed use? action

Sample composition

Record preparation and separation history with evidence for target content and relevant impurities.

1. Which preparation and purification records connect this sample to the assigned endohedral species? provenance
2. What fractions are target species, empty cages, other endohedral species, cage isomers or residual guest-containing materials? measurement
3. Does the stated purity represent mass, amount of substance or analytical signal, and which impurities could escape that method? boundary

Integrity under treatment

Track cage alteration, guest retention and degradation under explicitly tested conditions.

1. Under which storage, illumination, heating and solvent conditions has cage integrity and guest retention been checked? measurement
2. Does a proposed reaction preserve the enclosed guest while modifying the exterior, or change the defining guest-cage structure? boundary
3. Which before-and-after measurements are needed to verify identity following treatment? action

Use readiness

Judge suitability from the characterized sample and applicable evidence rather than the family name.

1. Which chemical identifiers and safety records explicitly cover this species, derivative and sample form? provenance
2. What measured property and purity requirement make the sample suitable for the intended experiment or application? action
3. Which handling limits or performance claims remain unsupported for this guest-cage combination? boundary

Check these first

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these check these first hold for the sense of endohedral fullerene this model covers, and on what evidence? provenance

Kinds and varieties

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these kinds and varieties hold for the sense of endohedral fullerene this model covers, and on what evidence? provenance

Identifiers and schemes

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these identifiers and schemes hold for the sense of endohedral fullerene this model covers, and on what evidence? provenance

Real-world use

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these real-world use hold for the sense of endohedral fullerene this model covers, and on what evidence? provenance

Failure modes and hazards

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these failure modes and hazards hold for the sense of endohedral fullerene this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of endohedral fullerene this model covers, and on what evidence? provenance