Other — Structural, Thermodynamic, and Transport Properties of the Small-Gap Two-Dimensional Metal-Organic Kagomé Materials Cu3(hexaiminobenzene)2and Ni3(hexaiminobenzene)2

Measurement evidence

Other

Structural, Thermodynamic, and Transport Properties of the Small-Gap Two-Dimensional Metal-Organic Kagomé Materials Cu3(hexaiminobenzene)2and Ni3(hexaiminobenzene)2 · Berry T., Morey J.R., Arpino K.E. et al. · Inorganic Chemistry · 2022 · 6480-6487

4 measurement groups · 21 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

Specific heat capacity in PPMS with dilution refrigerator

Calorimetry and thermal analysis

Cu3(HIB)2 densified pellet · Pellet

Specific heat measured between 0.1 and 300 K at mu0H = 0 and 1 T using semiadiabatic pulse technique with 1% temperature increase; triplicate measurements.

Temperature: 0.1-300
Geometry: Pellet with Apiezon N grease thermal coupling; addenda collected over same temperature range.
Context: pristine framework pellet
Measurement source: p003-p005 / 6482-6484 · Physical Property Measurement · Figure 4b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Low-temperature heat-capacity divergence	Smooth divergence down to 0.1 K	—	—	Text Exact Reported	p005 / 6484 · Results and Discussion · Figure 4b
Heat-capacity field response	2.5-fold increase in heat capacity for Cu3(HIB)2 with mu0H = 1 T	—	—	Text Exact Reported	p006 / 6485 · Conclusion · Figure 4b
Absence of magnetic/phase transition	No evidence of a phase transition above 0.1 K	—	—	Text Exact Reported	p001 / 6480 · Abstract · Figure 4b

Magnetic susceptibility and M(H) in MPMS-7T

Magnetometry and magnetic susceptibility

Cu3(HIB)2 densified pellet · Pellet

Magnetisation data collected from 2 to 300 K under mu0H = 1 T; M(H) curves at 2 and 300 K.

Temperature: 2-300
Geometry: Fixed pellets mounted in a straw to avoid preferred orientation.
Context: pristine framework pellet
Measurement source: p003 / 6482 · Physical Property Measurement · Figure 2b,d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
M(H) curve feature assessment	M(H) curves at 300 and 2 K are similarly featureless	—	—	Text Qualitative	p004 / 6483 · Results and Discussion · Figure 2d
Temperature-independent susceptibility term chi0	chi0 = 0.00185 emu mol^-1 Oe^-1	—	—	Figure Axis Exact Reported	p003 / 6482 · Results and Discussion · Figure 2b
Curie constantMarked as a best value within this paper	0.371 emu K (mol Cu)^-1 Oe^-1	—	—	Text Exact Reported	p003-p004 / 6482-6483 · Results and Discussion · Figure 2b
Frustration ratio lower bound	\|Theta_CW\|/T_order > ~70	—	—	Text Approximate	p004 / 6483 · Results and Discussion · Figure 2
Experimental effective magnetic moment	P_eff experimental = 1.72 mu_B	—	—	Figure Axis Exact Reported	p003 / 6482 · Results and Discussion · Figure 2b
Theoretical effective magnetic moment	P_eff theory = 1.73 mu_B	—	—	Figure Axis Exact Reported	p003 / 6482 · Results and Discussion · Figure 2b
Weiss temperatureMarked as a best value within this paper	-14.3 K	—	—	Text Exact Reported	p004 / 6483 · Results and Discussion · Figure 2b

Specific heat capacity in PPMS with dilution refrigerator

Calorimetry and thermal analysis

Ni3(HIB)2 densified pellet · Pellet

Specific heat measured between 0.1 and 300 K at mu0H = 0 and 1 T using semiadiabatic pulse technique with 1% temperature increase; triplicate measurements.

Temperature: 0.1-300
Geometry: Pellet with Apiezon N grease thermal coupling; addenda collected over same temperature range.
Context: pristine framework pellet
Measurement source: p003 / 6482 · Physical Property Measurement · Figure 4a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Phonon heat-capacity coefficient beta3Marked as a best value within this paper	4.3(8) mJ mol^-1 K^-4	—	(8)	Text Exact Reported	p005 / 6484 · Results and Discussion · Figure 4a
T-linear heat-capacity coefficient gammaMarked as a best value within this paper	148(4) mJ mol^-1 K^-2	—	(4)	Text Exact Reported	p005 / 6484 · Results and Discussion · Figure 4a
Low-temperature heat-capacity upturn	Small upturn below ~5 K; broad hump below ~1 K	—	—	Text Approximate	p005 / 6484 · Results and Discussion · Figure 4a
Absence of magnetic/phase transition	No evidence of a phase transition to an ordered state down to 0.1 K	—	—	Text Exact Reported	p001 / 6480 · Abstract · Figure 4a

Magnetic susceptibility and M(H) in MPMS-7T

Magnetometry and magnetic susceptibility

Ni3(HIB)2 densified pellet · Pellet

Magnetisation data collected from 2 to 300 K under mu0H = 1 T; M(H) curves at 2 and 300 K.

Temperature: 2-300
Geometry: Fixed pellets mounted in a straw to avoid preferred orientation.
Context: pristine framework pellet
Measurement source: p003 / 6482 · Physical Property Measurement · Figure 2a,c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
M(H) curve feature assessment	M(H) curves at 300 and 2 K are featureless	—	—	Text Qualitative	p003 / 6482 · Results and Discussion · Figure 2c
Temperature-independent susceptibility term chi0	chi0 = 0.00815 emu mol^-1 Oe^-1	—	—	Figure Axis Exact Reported	p003 / 6482 · Results and Discussion · Figure 2a
Curie constantMarked as a best value within this paper	0.989 emu K (mol Ni)^-1 Oe^-1	—	—	Text Exact Reported	p003 / 6482 · Results and Discussion · Figure 2a
Frustration ratio lower bound	\|Theta_CW\|/T_order > ~55	—	—	Text Approximate	p003 / 6482 · Results and Discussion · Figure 2
Experimental effective magnetic moment	P_eff experimental = 2.81 mu_B	—	—	Figure Axis Exact Reported	p003 / 6482 · Results and Discussion · Figure 2a
Theoretical effective magnetic moment	P_eff theory = 2.83 mu_B	—	—	Figure Axis Exact Reported	p003 / 6482 · Results and Discussion · Figure 2a
Weiss temperatureMarked as a best value within this paper	-10.6 K	—	—	Text Exact Reported	p003 / 6482 · Results and Discussion · Figure 2a