Review
Chemistry, Multidisciplinary
Rahul Deb, P. Balakrishna, Moumita Majumdar
Summary: The Group 15 Pn(I) cations, isoelectronic with donor-stabilized carbones, exhibit weak nucleophilicity despite having two lone pairs of electrons due to their inherent positive charge. Enhancing their Lewis basicity with strongly electron-donating ligands and chelating cyclic ligand systems has proven effective in increasing their nucleophilicity. Recent achievements in isolating fleeting Sb(I) and Bi(I) cations have been discussed, along with a discussion on the syntheses, structure, bonding situations, and reactivity of the Pn(I) cations, providing an outlook on their periodic trends and future applications.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Xin Zheng, Airan Li, Shuo Liu, Zhongkang Han, Min Zhang, Feng Liu, Chenguang Fu, Tiejun Zhu
Summary: This study investigates the influence of negatively charged defects on the n-type thermoelectric properties of Zintl phases from both theoretical and experimental perspectives. The results show that suppressing the formation of specific defects can successfully achieve n-type conduction, and further isoelectronic alloying and donor doping can significantly improve the thermoelectric performance of the material.
Article
Chemistry, Inorganic & Nuclear
Mathew D. Anker, Andrea O'Reilly, Claire L. McMullin, Martyn P. Coles
Summary: This study reports the formation of complexes containing In-Pn bonds by the reaction of potassium indyl with Pn (NONtBu)Cl (Pn = pnictide = Sb, Bi). X-ray crystallography and computational analysis confirm the properties and bonding mechanisms of these complexes.
Article
Materials Science, Multidisciplinary
K. Kihou, H. Kunioka, H. Nishiate, C. H. Lee
Summary: A low-cost synthesis procedure was established for Y-doped Mg-3(Sb,Bi)(2) that can be easily scaled up for mass production. Samples of Mg3+delta YxSb1.5Bi0.5 were synthesized via a melting method and the sample Mg3.3Y0.02Sb1.5Bi0.5 exhibited the highest dimensionless figure-of-merit (ZT) of 1.16 at T = 759 K.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Mark E. Wolf, Elizabeth A. Doty, Justin M. Turney, Henry F. Schaefer
Summary: This study examines tetrahedrane molecules with phosphorus substitution through experimental and theoretical approaches, revealing little change in the geometric parameters of the (CH)(3) moiety under pnictogen substitution, but significant alterations in Pn-C bonds and C-Pn-C bond angles. Delocalization of electrons into substituent antibonding orbitals is found to enhance the energetic favorability of the tetrahedrane structure, weakening Pn-C bonds, particularly with heavier pnictogens.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Physical
Ji-Sheng Liang, Xiao-Lei Shi, Ying Peng, Wei-Di Liu, Heng-Quan Yang, Cheng-Yan Liu, Jun-Liang Chen, Qi Zhou, Lei Miao, Zhi-Gang Chen
Summary: This study reports outstanding thermoelectric properties of n-type Y-doped Mg3.2Sb1.5Bi0.49Se0.01 materials, including a material coefficient of approximately 1.87 and a high average material coefficient of approximately 1.2, demonstrating great potential for practical applications. First-principles calculations indicate that Y doping can effectively tune carrier density and semiconductor properties, leading to enhanced thermoelectric performance. In addition, lattice distortions and strains caused by the dopant Y suppress the thermal conductivity, further improving the material coefficient.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Prakash Govindaraj, Kowsalya Murugan, Kathirvel Venugopal
Summary: This study uses first-principles computations to demonstrate the excellent thermoelectric performance of 1D PnSI (Pn = Sb, Bi) crystals. These materials exhibit low thermal conductivity and moderate power factor, resulting in superior figure of merit. They have the potential to rival existing mid-temperature thermoelectric materials.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Multidisciplinary Sciences
Jingxuan Ding, Tyson Lanigan-Atkins, Mario Calderon-Cueva, Arnab Banerjee, Douglas L. Abernathy, Ayman Said, Alexandra Zevalkink, Olivier Delaire
Summary: The study reveals that the low lattice thermal conductivity of Mg3X2 compounds originates from specific phonons, enabling a threefold tuning in kappa(l) by enlarging the scattering phase-space.
Article
Chemistry, Multidisciplinary
Yuntian Fu, Qihao Zhang, Zhongliang Hu, Meng Jiang, Aibin Huang, Xin Ai, Shun Wan, Heiko Reith, Lianjun Wang, Kornelius Nielsch, Wan Jiang
Summary: Efficient, environmentally friendly, and cost-effective thermoelectric modules have been developed, operating stably at high temperatures and achieving a high conversion efficiency, demonstrating feasibility and scalability for waste heat recovery applications.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Stephan Klos, Johannes Beck
Summary: Yellow and orange platelet-shaped crystals can be obtained by reacting barium, gallium, and either bismuth or antimony with small amounts of barium peroxide. Black metallic shining crystals can be obtained by using arsenic instead of bismuth or antimony. These compounds have air-sensitive crystals and have been characterized by single crystal X-ray diffraction and energy dispersive X-ray fluorescence spectroscopy.
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
(2022)
Article
Materials Science, Multidisciplinary
Qian Liu, Ke-Feng Liu, Qi-Qi Wang, Xiao-Cun Liu, Fang Yu, Jian Liu, Yuan-Yuan Su, Sheng-Qing Xia
Summary: This report systematically investigated the thermoelectric properties of TiNiSi-type Zintl phases with the nominal formulae of ALiSb (A = Ca, Sr, Eu, Yb) for the first time. The results showed that ALiSb Zintl phases had inherently low lattice thermal conductivity despite their simple structure. Rattling-like scattering behavior originating from the Li atoms was suggested as the mechanism for this low thermal conductivity. By configuring solid solutions, such as Sr0.8Eu0.2LiSb, the zT value of the material was further optimized, reaching a maximum of 1.2 at 823 K. These findings challenge the previous understanding that low thermal conductivity in Zintl phases is achieved through complex crystal structures, and suggest that light-element containing Zintl phases can be a promising resource for thermoelectric applications.
Article
Chemistry, Inorganic & Nuclear
Fuxing Pan, Rodica Ababei, Werner Massa, Stefanie Dehnen
Summary: The formation and chemistry of P-7(3-) has been extensively studied, while investigations on its heavier congeners Pn(7)(3-) (Pn= As, Sb, Bi), especially Bi-7(3-), have been limited. In this report, new coordination compounds with As-7(3-) and Bi-7(3-) are presented, expanding the rare studies on these compounds.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Sikang Zheng, Kunling Peng, Shijuan Xiao, Zizhen Zhou, Xu Lu, Guang Han, Bin Zhang, Guoyu Wang, Xiaoyuan Zhou
Summary: The recent discovery of high-performance Mg3Sb2 has sparked significant research efforts in the search for novel Zintl-phase compounds as promising thermoelectric materials. In this study, a series of planar Zintl-phase XCuSb (X = Ca, Sr, Ba) thermoelectric materials were developed through vacuum induction melting. These compounds exhibit high carrier mobilities and low lattice thermal conductivities, resulting in high p-type zT values.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Hui-Fei Zhai, Yi-Shuai Jing, Pan Zhang, Bo Lin, Jia-Ming Song, Peng Hu, Bai-Zhuo Li, Jian-Hua Du, Zhi-Wei Jiao, Guang-Han Cao
Summary: We report two novel titanium-based pnictide oxide compounds (EuF)2Ti2Pn2O (Pn = Sb, Bi) which exhibit spin-density wave/charge-density wave instability and strong electron correlation effects, providing new platforms for studying density wave, magnetic ordering, and electron correlation effects.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Ghazanfar Nazir, Adeela Rehman, Sajjad Hussain, Eman Algrafy, Abeer Mera, H. H. Hegazy, Sarah Alharthi, Mohammed A. Amin
Summary: Through DFT simulation and experimental verification, we have comprehensively investigated some narrow bandgap double perovskite materials. These materials exhibit remarkable electronic, optical, thermoelectric, and mechanical properties, and have potential applications in fields such as infrared sensors and surgical equipment.
MATERIALS TODAY COMMUNICATIONS
(2022)
