151
|
Yu HL, Sang RL, Wu YY. Structure and Aromaticity of B6H5+ Cation: A Novel Borhydride System Containing Planar Pentacoordinated Boron. J Phys Chem A 2009; 113:3382-6. [DOI: 10.1021/jp809599z] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Hong-Lang Yu
- Department of Chemistry, Hanshan Normal University, Chaozhou,Guangdong, 521041, Poeple’s Republic of China, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, People’s Republic of China
| | - Rui-Li Sang
- Department of Chemistry, Hanshan Normal University, Chaozhou,Guangdong, 521041, Poeple’s Republic of China, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, People’s Republic of China
| | - Yun-Ying Wu
- Department of Chemistry, Hanshan Normal University, Chaozhou,Guangdong, 521041, Poeple’s Republic of China, State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, People’s Republic of China
| |
Collapse
|
152
|
Averkiev BB, Wang LM, Huang W, Wang LS, Boldyrev AI. Experimental and theoretical investigations of CB8−: towards rational design of hypercoordinated planar chemical species. Phys Chem Chem Phys 2009; 11:9840-9. [DOI: 10.1039/b908973j] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
153
|
CSi2Ga2: a neutral planar tetracoordinate carbon (ptC) building block. J Mol Model 2008; 15:97-104. [DOI: 10.1007/s00894-008-0362-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2008] [Accepted: 09/22/2008] [Indexed: 11/27/2022]
|
154
|
Liu C, Liu L, Han P, Tang M, Fu H. Structure and stability of B5C and C5B clusters. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:3599-3607. [PMID: 18937227 DOI: 10.1002/rcm.3769] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Geometry optimizations and vibrational frequencies of B5C and C5B clusters were calculated with the Becke-3LYP method using the 6-311+G(d) basis set and some stable configurations of B5C and C5B clusters have been found. The most stable structure of B5C is a planar six-membered ring. However, for C5B clusters, the most stable structure is linear with a boron atom in position 3. Various configurations of B5C clusters containing three-membered boron rings have predominance in energy, whereas various configurations of C5B clusters containing three-membered carbon rings are disadvantageous in energy. In B5C clusters, isomer2 can be converted into isomer1 by surmounting an energy barrier of 43.83 kJ.mol(-1). In C5B clusters, the conversions of isomer5 into isomer2 and isomer7 into isomer2 have energy barriers of 19.66 and 20.57 kJ.mol(-1), respectively.
Collapse
Affiliation(s)
- Chunhui Liu
- Chemistry and Chemical Technology Institute, Xuchang University, Xuchang, Henan 461000, China
| | | | | | | | | |
Collapse
|
155
|
Ito K, Pu Z, Li QS, Schleyer PVR. Cyclic Boron Clusters Enclosing Planar Hypercoordinate Cobalt, Iron, and Nickel. Inorg Chem 2008; 47:10906-10. [DOI: 10.1021/ic800993b] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keigo Ito
- Department of Chemistry, Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602, U.S.A., School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China, and Center for Computational Quantum Chemistry, South China Normal University, Guangzhou 510631, China
| | - Zhifeng Pu
- Department of Chemistry, Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602, U.S.A., School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China, and Center for Computational Quantum Chemistry, South China Normal University, Guangzhou 510631, China
| | - Qian-Shu Li
- Department of Chemistry, Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602, U.S.A., School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China, and Center for Computational Quantum Chemistry, South China Normal University, Guangzhou 510631, China
| | - Paul von Ragué Schleyer
- Department of Chemistry, Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602, U.S.A., School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China, and Center for Computational Quantum Chemistry, South China Normal University, Guangzhou 510631, China
| |
Collapse
|
156
|
Theoretical observation of hexaatomic molecules containing pentacoordinate planar carbon. ACTA ACUST UNITED AC 2008. [DOI: 10.1007/s11426-008-0121-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
157
|
Shahbazian S, Alizadeh S. A Computational Study on Some Viable Targets for Gas-Phase Synthesis of Metal Complexes of the Cyclic (B6C)−2 and Their Bonding Pattern. J Phys Chem A 2008; 112:10365-77. [DOI: 10.1021/jp806874u] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shant Shahbazian
- Department of Chemistry, Faculty of Sciences, P.O. Box 19395-4716, Shahid Beheshti University, Evin, Tehran, Iran 19839
| | - Shadi Alizadeh
- Department of Chemistry, Faculty of Sciences, P.O. Box 19395-4716, Shahid Beheshti University, Evin, Tehran, Iran 19839
| |
Collapse
|
158
|
Wang Y, Huang Y, Yin B, Yang B, Liu R. Octacoordinate Carbons Encaged Inside Carborane Clusters: A Density Functional Theory Investigation. J Phys Chem A 2008; 112:7643-51. [DOI: 10.1021/jp801332b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Wang
- Departamento de Química, C-9, Universidad Autónoma de Madrid, 28049 Madrid, Spain, and Department of Chemistry, Beijing Normal University, 100875 Beijing, China
| | - Yuanhe Huang
- Departamento de Química, C-9, Universidad Autónoma de Madrid, 28049 Madrid, Spain, and Department of Chemistry, Beijing Normal University, 100875 Beijing, China
| | - Bing Yin
- Departamento de Química, C-9, Universidad Autónoma de Madrid, 28049 Madrid, Spain, and Department of Chemistry, Beijing Normal University, 100875 Beijing, China
| | - Baohua Yang
- Departamento de Química, C-9, Universidad Autónoma de Madrid, 28049 Madrid, Spain, and Department of Chemistry, Beijing Normal University, 100875 Beijing, China
| | - Ruozhuang Liu
- Departamento de Química, C-9, Universidad Autónoma de Madrid, 28049 Madrid, Spain, and Department of Chemistry, Beijing Normal University, 100875 Beijing, China
| |
Collapse
|
159
|
Perez-Peralta N, Sanchez M, Martin-Polo J, Islas R, Vela A, Merino G. Planar Tetracoordinate Carbons in Cyclic Semisaturated Hydrocarbons. J Org Chem 2008; 73:7037-44. [DOI: 10.1021/jo800885x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nancy Perez-Peralta
- Facultad de Química, Universidad de Guanajuato, Noria Alta s/n C.P. 36050, Guanajuato, Gto. México, and Departamento de Química, Centro de Investigación y de Estudios Avanzados, A. P. 14-740, México, D.F. 07000, México
| | - Mario Sanchez
- Facultad de Química, Universidad de Guanajuato, Noria Alta s/n C.P. 36050, Guanajuato, Gto. México, and Departamento de Química, Centro de Investigación y de Estudios Avanzados, A. P. 14-740, México, D.F. 07000, México
| | - Jesus Martin-Polo
- Facultad de Química, Universidad de Guanajuato, Noria Alta s/n C.P. 36050, Guanajuato, Gto. México, and Departamento de Química, Centro de Investigación y de Estudios Avanzados, A. P. 14-740, México, D.F. 07000, México
| | - Rafael Islas
- Facultad de Química, Universidad de Guanajuato, Noria Alta s/n C.P. 36050, Guanajuato, Gto. México, and Departamento de Química, Centro de Investigación y de Estudios Avanzados, A. P. 14-740, México, D.F. 07000, México
| | - Alberto Vela
- Facultad de Química, Universidad de Guanajuato, Noria Alta s/n C.P. 36050, Guanajuato, Gto. México, and Departamento de Química, Centro de Investigación y de Estudios Avanzados, A. P. 14-740, México, D.F. 07000, México
| | - Gabriel Merino
- Facultad de Química, Universidad de Guanajuato, Noria Alta s/n C.P. 36050, Guanajuato, Gto. México, and Departamento de Química, Centro de Investigación y de Estudios Avanzados, A. P. 14-740, México, D.F. 07000, México
| |
Collapse
|
160
|
Averkiev BB, Zubarev DY, Wang LM, Huang W, Wang LS, Boldyrev AI. Carbon Avoids Hypercoordination in CB6−, CB62−, and C2B5− Planar Carbon−Boron Clusters. J Am Chem Soc 2008; 130:9248-50. [DOI: 10.1021/ja801211p] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Boris B. Averkiev
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352
| | - Dmitry Yu. Zubarev
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352
| | - Lei-Ming Wang
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352
| | - Wei Huang
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352
| | - Lai-Sheng Wang
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, Utah 84322, Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99354, and Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352
| |
Collapse
|
161
|
Boron rings containing planar octa-and enneacoordinate cobalt, iron and nickel metal elements. ACTA ACUST UNITED AC 2008. [DOI: 10.1007/s11426-008-0073-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
162
|
Averkiev BB, Boldyrev AI. Theoretical design of planar molecules with a nona- and decacoordinate central atom. RUSS J GEN CHEM+ 2008. [DOI: 10.1134/s1070363208040361] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
163
|
Gribanova TN, Minyaev RM, Minkin VI. Theoretical design of planar systems with hypercoordinate p elements of the second period in a nonmetallic environment. RUSS J GEN CHEM+ 2008. [DOI: 10.1134/s107036320804035x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
164
|
Zhang C, Sun W, Cao Z. Zigzag Boron−Carbon Nanotubes with Quasi-planar Tetracoordinate Carbons. J Am Chem Soc 2008; 130:5638-9. [DOI: 10.1021/ja800540x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Congjie Zhang
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry & Materials Science, Shaanxi Normal University, Xi’an, 710062, China, and Department of Chemistry and State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, China
| | - Wenxiu Sun
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry & Materials Science, Shaanxi Normal University, Xi’an, 710062, China, and Department of Chemistry and State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, China
| | - Zexing Cao
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry & Materials Science, Shaanxi Normal University, Xi’an, 710062, China, and Department of Chemistry and State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen, 361005, China
| |
Collapse
|
165
|
Yang LM, He HP, Ding YH, Sun CC. Achieving Stable Hypercarbon CB62−-Based Cluster-Assembled Complexes: A General Strategy. Organometallics 2008. [DOI: 10.1021/om7008588] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Li-Ming Yang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| | - Hai-Peng He
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| | - Yi-Hong Ding
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| | - Chia-Chung Sun
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People’s Republic of China
| |
Collapse
|
166
|
Pei Y, Zeng XC. Probing the Planar Tetra-, Penta-, and Hexacoordinate Carbon in Carbon−Boron Mixed Clusters. J Am Chem Soc 2008; 130:2580-92. [DOI: 10.1021/ja077139v] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yong Pei
- Department of Chemistry and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, Nebraska 68588
| | - Xiao Cheng Zeng
- Department of Chemistry and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, Nebraska 68588
| |
Collapse
|
167
|
Wang ZX, Zhang CG, Chen Z, Schleyer PVR. Planar Tetracoordinate Carbon Species Involving Beryllium Substituents. Inorg Chem 2008; 47:1332-6. [DOI: 10.1021/ic7017709] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhi-Xiang Wang
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China, and Department of Chemistry, University of Georgia, Athens, Georgia 30602
| | - Cheng-Gen Zhang
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China, and Department of Chemistry, University of Georgia, Athens, Georgia 30602
| | - Zhongfang Chen
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China, and Department of Chemistry, University of Georgia, Athens, Georgia 30602
| | - Paul von Ragué Schleyer
- College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China, and Department of Chemistry, University of Georgia, Athens, Georgia 30602
| |
Collapse
|
168
|
Islas R, Heine T, Ito K, Schleyer PVR, Merino G. Boron Rings Enclosing Planar Hypercoordinate Group 14 Elements. J Am Chem Soc 2007; 129:14767-74. [DOI: 10.1021/ja074956m] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rafael Islas
- Contribution from the Facultad de Química, Universidad de Guanajuato. Col. Noria Alta s/n C.P. 36050, Guanajuato, Gto., México, Physikalische Chemie, Fachbereich Chemie, TU Dresden, D-01062 Dresden, Germany, Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602-2525
| | - Thomas Heine
- Contribution from the Facultad de Química, Universidad de Guanajuato. Col. Noria Alta s/n C.P. 36050, Guanajuato, Gto., México, Physikalische Chemie, Fachbereich Chemie, TU Dresden, D-01062 Dresden, Germany, Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602-2525
| | - Keigo Ito
- Contribution from the Facultad de Química, Universidad de Guanajuato. Col. Noria Alta s/n C.P. 36050, Guanajuato, Gto., México, Physikalische Chemie, Fachbereich Chemie, TU Dresden, D-01062 Dresden, Germany, Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602-2525
| | - Paul v. R. Schleyer
- Contribution from the Facultad de Química, Universidad de Guanajuato. Col. Noria Alta s/n C.P. 36050, Guanajuato, Gto., México, Physikalische Chemie, Fachbereich Chemie, TU Dresden, D-01062 Dresden, Germany, Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602-2525
| | - Gabriel Merino
- Contribution from the Facultad de Química, Universidad de Guanajuato. Col. Noria Alta s/n C.P. 36050, Guanajuato, Gto., México, Physikalische Chemie, Fachbereich Chemie, TU Dresden, D-01062 Dresden, Germany, Center for Computational Chemistry, University of Georgia, Athens, Georgia 30602-2525
| |
Collapse
|
169
|
Ab initio post-HF study of electronic charge density distribution of cyclic (B6C)−2: Concrete evidence of a novel bonding pattern. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2007.08.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
170
|
Yang LM, Ding YH, Sun CC. The Si-doped planar tetracoordinate carbon (ptC) unit CAl3Si− could be used as a building block or inorganic ligand during cluster-assembly. Theor Chem Acc 2007. [DOI: 10.1007/s00214-007-0389-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
171
|
Wu YB, Yuan CX, Gao F, Lü HG, Guo JC, Li SD, Wang YK, Yang P. Hydrometal Complexes with More than One Planar and Quasi-Planar Tetracoordinate Carbon Atom: From Hydrogen-Surrounded Pieces to the Rudiment of Hydrogen-Sealed Nanotubes. Organometallics 2007. [DOI: 10.1021/om070058n] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan-Bo Wu
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Cai-Xia Yuan
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Fei Gao
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Hai-Gang Lü
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Jin-Chang Guo
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Si-Dian Li
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Yue-Kui Wang
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | - Pin Yang
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030006, and Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| |
Collapse
|
172
|
|
173
|
Wang LM, Huang W, Averkiev BB, Boldyrev AI, Wang LS. CB7−: Experimental and Theoretical Evidence against Hypercoordinate Planar Carbon. Angew Chem Int Ed Engl 2007; 46:4550-3. [PMID: 17487912 DOI: 10.1002/anie.200700869] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lei-Ming Wang
- Department of Physics, Washington State University, 2710 University Drive, Richland, WA 99354, USA
| | | | | | | | | |
Collapse
|
174
|
Wang LM, Huang W, Averkiev B, Boldyrev A, Wang LS. CB7−: Experimental and Theoretical Evidence against Hypercoordinate Planar Carbon. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200700869] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
175
|
Wodrich MD, Corminboeuf C, Park SS, Schleyer PVR. Double Aromaticity in Monocyclic Carbon, Boron, and Borocarbon Rings Based on Magnetic Criteria. Chemistry 2007; 13:4582-93. [PMID: 17431868 DOI: 10.1002/chem.200700154] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The double-aromatic character of selected monocyclic carbon, boron, and borocarbon rings is demonstrated by refined nucleus-independent chemical shift (NICS) analyses involving the contributions of individual canonical MOs and their out-of-plane NICS tensor component (CMO-NICS(zz)). The double aromaticity considered results from two mutually orthogonal Hückel p AO frameworks in a single molecule. The familiar pi orbitals are augmented by the in-plane delocalization of electrons occupying sets of radial (rad) p orbitals. Such double aromaticity is present in B(3) (-), C(6)H(3) (+), C(6) (4+), C(4)B(4) (4+), C(6), C(5)B(2), C(4)B(4), C(2)B(8), B(10) (2-), B(12), C(10), C(9)B(2), C(8)B(4), C(7)B(6), C(6)B(8), and C(14). Monocyclic C(8) and C(12) are doubly antiaromatic, as both the orthogonal pi and radial Hückel sets are paratropic. Planar C(7) and C(9) monocycles have mixed aromatic (pi) and antiaromatic (radial) systems.
Collapse
Affiliation(s)
- Matthew D Wodrich
- Department of Chemistry and Center for Computational Chemistry, University of Georgia, Athens, GA 30602, USA
| | | | | | | |
Collapse
|
176
|
Fowler PW, Gray BR. Induced Currents and Electron Counting in Aromatic Boron Wheels: B82- and B9-. Inorg Chem 2007; 46:2892-7. [PMID: 17343375 DOI: 10.1021/ic062302t] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The newly discovered atom-centered polygonal wheels B8(2-) and B9- are predicted to show ring currents characteristic of aromatic systems. Ipsocentric mapping of induced current density for both molecules attributes a pi diatropic current to the four electrons of the doubly degenerate pi HOMO and a sigma diatropic current to the four electrons of the doubly degenerate sigma HOMO, each orbital pair having an available transition to corresponding LUMO orbitals in which the angular node count increases by one. Thus, on the magnetic criterion, B8(2-) and B9- are each both pi- and sigma-aromatic as a consequence of the nodal properties of the frontier orbitals of the pi- and sigma-stacks.
Collapse
Affiliation(s)
- Patrick W Fowler
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK. p.w.fowler@ sheffield.ac.uk
| | | |
Collapse
|
177
|
Zhao YY, Zhang MY, Xu SH, Sun CC. Structure and properties of polycoordinate planar boron compounds. J Chem Phys 2007; 126:044303. [PMID: 17286466 DOI: 10.1063/1.2428288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Polycoordinate planar B compounds BX(n) (X=B, Al, C, N and Si; n=3-8) are optimized at B3LYP/6-311++G (3df,p) theoretical level. For X=B, center B atom can coordinate three to eight atoms, while for X=Al, C, Si, and N, it can only coordinate three to five atoms. The natural bond orbital analysis shows that the center B atom does not violate the octet rule, though the numbers of coordinated atom even reach 8. According to molecular orbital analysis and nucleus independent chemical shift value calculation, it seems that these polycoordinate planar B compounds BX(n) (X=B, Al, C, N, and Si; n=3-8) hold twofold (alpha and pi) aromatic, which play an important role in their stability and keeping all atoms in one plane.
Collapse
Affiliation(s)
- Yuan-yuan Zhao
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | | | | | | |
Collapse
|
178
|
Yang LM, Ding YH, Sun CC. Assembly and Stabilization of a Planar Tetracoordinated Carbon Radical CAl3Si: A Way To Design Spin-Based Molecular Materials. J Am Chem Soc 2007; 129:1900-1. [PMID: 17256941 DOI: 10.1021/ja068334x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li-Ming Yang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | | | | |
Collapse
|
179
|
Yang LM, Ding YH, Tian WQ, Sun CC. Planar carbon radical’s assembly and stabilization, a way to design spin-based molecular materials. Phys Chem Chem Phys 2007; 9:5304-14. [PMID: 17914465 DOI: 10.1039/b707898f] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we report the first computational study on the assembly and stabilization of a novel kind of radical, i.e., the planar tetracoordinate carbon radical CAl(4)(-). Based on the 6-31+G(d)-UB3LYP, UMP2 and UCCSD(T) calculations on charged [D(CAl(4))M](q-), saturated [D(CAl(4))M(n)] and extended (CpM)(p)(CAl(4))(q) sandwich-like compounds (D = CAl(4)(-), Cp(-); M = Li, Na, K, Be, Mg, Ca), we find that for the six metals, the planar radical CAl(4)(-) can only be assembled in the "hetero-decked sandwich" scheme (e.g. [CpM(CAl(4))](q-)) rather than the traditional "homo-decked sandwich" scheme. Moreover, the low and high spin states of the designed sandwich-like species are perfectly degenerate during assembly. This can be ascribed to the good spin conservation of the CAl(4)(-) deck and the good spatial separation between two CAl(4)(-) decks. Our results show for the first time that the planar radical CAl(4)(-) can act as a new type of spin-embedded "superatom" for cluster assembly when it is assisted by a rigid partner like Cp(-). The good spin-conservation of CAl(4)(-) is very promising for the future design of novel paramagnetic and diamagnetic materials. The ionic, clustering and radical interactions between the two decks are analyzed in detail, which is quite crucial to improve the insight and understanding of the nature and origin of the interactions of the "deck-core-deck" in the metallocenes. Such information is also important in understanding the radical reactions and designing novel spin-based molecular materials. The present study should be expected to enrich the flat carbon chemistry, radical chemistry, metallocene chemistry and combinatorial chemistry.
Collapse
Affiliation(s)
- Li-Ming Yang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | | | | | | |
Collapse
|
180
|
Yang LM, Ding YH, Sun CC. Design of Sandwichlike Complexes Based on the Planar Tetracoordinate Carbon Unit CAl42-. J Am Chem Soc 2006; 129:658-65. [PMID: 17227029 DOI: 10.1021/ja066217w] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ever being a large curiosity, a series of simple "planar tetracoordinate carbon (ptC)" molecules have been recently characterized by experiments. Incorporation of such exotic ptC units into the assembled molecular materials, which will bridge the isolated clusters in molecular beams and the potential solid materials, is very challenging. In this paper, we described the first attempt on how to assemble the fewest-number ptC unit CAl42- into molecular materials in sandwich forms on the basis of the density functional theory calculations on a series of model compounds [D(CAl4)M]q- as well as the saturated compounds [D(CAl4)Mn] ((D = CAl42-, Cp-(C5H5-); M = Li, Na, K, Be, Mg, Ca). For M = Li, Be, Mg, and Ca, the ptC unit CAl42- can only be assembled in our newly proposed "heterodecked sandwich" scheme (e.g., [Cp(CAl4)M]q- (M = Li, Na, K, q = 2; M = Be, Mg, Ca, q = 1)) so as to avoid cluster fusion. For M = Na and K, the ptC unit CAl42- can be assembled in both the traditional "homodecked sandwich" [(CAl4)2M]q- (M = Li, Na, K, q = 3; M = Be, Mg, Ca, q = 2) and the novel heterodecked sandwich schemes. Moreover, the counterions were found to have an important role in determining the type of the ground structures for the homodecked sandwich. Various assembled species in extended frameworks were designed. Notably, among all the designed sandwich species, the ptC unit CAl42- generally prefers to interact with the partner deck at the side (Al-Al bond) or corner (Al atom) site. This has not been reported in the sandwich complexes on the basis of the known decks such as Cp-, P5-, N42-, and Al42-, for which only the traditional face-face interaction type was considered. Our results for the first time showed that the ptC unit CAl42- can act as a new type of "superatom". The present results are expected to enrich the flat carbon chemistry, superatom chemistry, metallocenes, and combinational chemistry.
Collapse
Affiliation(s)
- Li-Ming Yang
- Contribution from the State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | | | | |
Collapse
|
181
|
Affiliation(s)
- Reinhart Keese
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland.
| |
Collapse
|
182
|
Li SD, Miao CQ, Ren GM, Guo JC. Triple-Decker Transition-Metal Complexes (CnHn)M(B6C)M(CnHn) (M = Fe, Ru, Mn, Re;n = 5, 6) Containing Planar Hexacoordinate Carbon Atoms. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600118] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
183
|
Wu YB, Yuan CX, Yang P. The complex: A beautiful molecular wheel containing a ring of six planar tetracoordinate carbon atoms. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.theochem.2006.03.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
184
|
Wang Y, Huang Y, Liu R. Hexa- and Octacoordinate Carbon in Hydrocarbon Cages: Theoretical Design and Characterization. Chemistry 2006; 12:3610-6. [PMID: 16491495 DOI: 10.1002/chem.200501320] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A new series of hydrocarbon cages containing hexa- and octacoordinate carbon centers were designed theoretically by performing DFT calculations at the B3 LYP/6-311+G** level. Among these non-classical structures that were found to still obey the 8e rule, the two tetracations with octacoordinate carbons may be the first examples found in pure hydrocarbons. Structural characteristics, as well as thermodynamic and kinetic stabilities, were also investigated theoretically for these two octacoordinate tetracations. These hydrocarbon compounds containing hypercoordinate carbon centers provide a challenge for synthetic organic chemists.
Collapse
Affiliation(s)
- Yang Wang
- Department of Chemistry, Beijing Normal University, Beijing 100875, China
| | | | | |
Collapse
|
185
|
Minyaev RM, Minkin VI, Gribanova TN, Starikov AG. Sandwich compounds with central hypercoordinate carbon, nitrogen, and oxygen: A quantum-chemical study. HETEROATOM CHEMISTRY 2006. [DOI: 10.1002/hc.20268] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
186
|
Zubarev DY, Boldyrev AI. Comprehensive analysis of chemical bonding in boron clusters. J Comput Chem 2006; 28:251-68. [PMID: 17111395 DOI: 10.1002/jcc.20518] [Citation(s) in RCA: 195] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We present a comprehensive analysis of chemical bonding in pure boron clusters. It is now established in joint experimental and theoretical studies that pure boron clusters are planar or quasi-planar at least up to twenty atoms. Their planarity or quasi-planarity was usually discussed in terms of pi-delocalization or pi-aromaticity. In the current article, we demonstrated that one cannot ignore sigma-electrons and that the presence of two-center two-electron (2c--2e) peripheral B--B bonds together with the globally delocalized sigma-electrons must be taken into consideration when the shape of pure boron cluster is discussed. The global aromaticity (or global antiaromaticity) can be assigned on the basis of the 4n+2 (or 4n) electron counting rule for either pi- or sigma-electrons in the planar structures. We showed that pure boron clusters could have double (sigma- and pi-) aromaticity (B3-, B4, B5+, B6(2+), B7+, B7-, B8, B(8)2-, B9-, B10, B11+, B12, and B13+), double (sigma- and pi-) antiaromaticity (B6(2-), B15), or conflicting aromaticity (B5-,sigma-antiaromatic and pi-aromatic and B14, sigma-aromatic and pi-antiaromatic). Appropriate geometric fit is also an essential factor, which determines the shape of the most stable structures. In all the boron clusters considered here, the peripheral atoms form planar cycles. Peripheral 2c--2e B--B bonds are built up from s to p hybrid atomic orbitals and this enforces the planarity of the cycle. If the given number of central atoms (1, 2, 3, or 4) can perfectly fit the central cavity then the overall structure is planar. Otherwise, central atoms come out of the plane of the cycle and the overall structure is quasi-planar.
Collapse
Affiliation(s)
- Dmitry Yu Zubarev
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT 84322-0300, USA
| | | |
Collapse
|
187
|
Abstract
Though carbon is mostly tetravalent and tetracoordinated, there are several examples where the coordination number exceeds four. Structural varieties that exhibit hypercarbons in polyhedral structures such as polyhedral carboranes, sandwich complexes, encapsulated polyhedral structures and novel planar aromatic systems with atoms embedded in the middle are reviewed here. The structural variety anticipated with hypercoordinate carbon among carboranes is large as there are many modes of condensation that could lead to large number of new patterns. The relative stabilities of positional isomers of polyhedral carboranes, sandwich structures, and endohedral carboranes are briefly described. The mno rule accounts for the variety of structural patterns. Wheel-shaped and planar hypercoordinated molecules are recent theoretical developments in this area.
Collapse
Affiliation(s)
- Eluvathingal D Jemmis
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore -560012, India.
| | | | | |
Collapse
|
188
|
Alexandrova AN, Koyle E, Boldyrev AI. Theoretical study of hydrogenation of the doubly aromatic B 7 − cluster. J Mol Model 2005; 12:569-76. [PMID: 16261298 DOI: 10.1007/s00894-005-0035-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2005] [Accepted: 07/29/2005] [Indexed: 11/29/2022]
Abstract
We have studied the influence of hydrogenation on the relative stability of the low-lying isomers of the anionic B7- cluster, computationally. It is known that the pure-boron B7- cluster has a doubly (sigma- and pi-) aromatic C6v(3A1) quasi-planar wheel-type triplet global minimum (structure 1), a low-lying sigma-aromatic and pi-antiaromatic quasi-planar singlet C2v (1A1) isomer 2 (0.7 kcal mol(-1) above the global minimum), and a planar doubly (sigma- and pi-) antiaromatic C2v (1A1) isomer 3 (7.8 kcal mol(-1) above the global minimum). However, upon hydrogenation, an inversion in the stability of the species occurs. The planar B7H 2- (C2v, 1A1) isomer 4, originated from the addition of two hydrogen atoms to the doubly antiaromatic B7- isomer 3, becomes the global minimum structure. The second most stable B7H2- isomer 5, originated from the quasi-planar triplet wheel isomer 1 of B7- , was found to be 27 kcal mol(-1) higher in energy. The inversion in stability occurs due to the loss of the doubly aromatic character in the wheel-type global minimum isomer (C6v, 3A1) of B7- upon H2-addition. In contrast, the planar isomer of B7- (C2v, 1A1) gains aromatic character upon addition of two hydrogen atoms, which makes it more stable.
Collapse
Affiliation(s)
- Anastassia N Alexandrova
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT 84322-0300, USA
| | | | | |
Collapse
|
189
|
|
190
|
Li SD, Miao CQ. M5H5X (M = Ag, Au, Pd, Pt; X = Si, Ge, P, S): Hydrometal Pentagons with D5h Planar Pentacoordinate Nonmetal Centers. J Phys Chem A 2005; 109:7594-7. [PMID: 16834129 DOI: 10.1021/jp0530000] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A density functional theory investigation has been presented in this work on M(5)H(5)X hydrometal pentagons (M = Ag, Au, Pd, P) with D(5)(h) planar pentacoordinate nonmetal centers (X = Si, Ge, P, S). The introduction of the nonmetal centers X introduces p aromaticity to M(5)H(5)X complexes. These novel planar complexes are favored in thermodynamics and confirmed to be aromatic in nature. They may be expanded to one, two, or even three dimensions with multiple planar pentacoordinate silicon and other nonmetal centers.
Collapse
Affiliation(s)
- Si-Dian Li
- Institute of Molecular Science, Shanxi University, Taiyuan 030001, Shanxi, People's Republic of China
| | | |
Collapse
|
191
|
Minyaev RM, Gribanova TN, Minkin VI, Starikov AG, Hoffmann R. Planar and Pyramidal Tetracoordinate Carbon in Organoboron Compounds. J Org Chem 2005; 70:6693-704. [PMID: 16095289 DOI: 10.1021/jo050651j] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Using previously proposed C(BH)2(CH)2 (16, 17) and C(CH)2B2 (22) systems with a central planar tetracoordinate carbon (ptC) atom linking two three-membered rings as building blocks, a series of stable structures containing two and three ptC centers within a molecule have been designed and computationally studied with the DFT (B3LYP/6-311+G) method. Inclusion of a carbon atom ligated with pi-accepting and sigma-donating boron centers into at least one aromatic ring is critical for stabilization of a planar structure. A square pyramidal configuration at tetracoordinate carbon may be achieved in appropriately strained molecules such as [3.3.3.3]tetraborafenestrane 45 and others by surrounding the carbon with boron-centered ligands.
Collapse
Affiliation(s)
- Ruslan M Minyaev
- Institute of Physical and Organic Chemistry at Rostov State University, Southern Research Center of Russian Academy of Sciences, Rostov-on-Don, Russian Federation.
| | | | | | | | | |
Collapse
|
192
|
Esteves PM, Ferreira NBP, Corrêa RJ. Neutral Structures with a Planar Tetracoordinated Carbon Based on Spiropentadiene Analogues. J Am Chem Soc 2005; 127:8680-5. [PMID: 15954773 DOI: 10.1021/ja042971a] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Neutral hydrocarbon structures containing a planar tetracoordinated carbon atom are proposed on the basis of quantum chemical calculations. The planarity at the central carbon atom is achieved by using aromaticity for stabilizing a positively charged core moiety that contains the planar atom. This charge is compensated by negatively charged cyclopentadienyl rings fused on the structure, leading to neutral structures. These are found to be stable from a dynamic point of view and are potentially synthesizable through carbene chemistry. These structures can lead to new breakthroughs in the chemical structure theory. A family of species derived from this model is also presented.
Collapse
Affiliation(s)
- Pierre M Esteves
- Instituto de Química, Universidade Federal do Rio de Janeiro, Cidade Universitária, CT Bloco A, 21949-900, Rio de Janeiro-RJ, Brazil.
| | | | | |
Collapse
|
193
|
Li SD, Guo JC, Miao CQ, Ren GM. C2h (BnEmSi)2H2 Molecules (E = B, C, Si; n = 3−6; m = 1, 2) Containing Double Planar Tetra-, Penta-, and Hexacoordinate Silicons. J Phys Chem A 2005; 109:4133-6. [PMID: 16833737 DOI: 10.1021/jp050378p] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A density functional theory investigation on a series of S-shaped or cyclic (BnEmSi)2H2 molecules (E = B, C, Si; n = 3-6; m = 1, 2) containing double planar tetra-, penta-, and hexacoordinate silicons has been presented in this work. Further theoretical evidence is provided to support the previously proposed structural pattern to host planar hypercoordinate silicons in small aromatic molecules.
Collapse
Affiliation(s)
- Si-Dian Li
- Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China
| | | | | | | |
Collapse
|
194
|
|
195
|
Erhardt S, Frenking G, Chen Z, Schleyer PVR. Aromatic Boron Wheels with More than One Carbon Atom in the Center: C
2
B
8
, C
3
B
9
3+
, and C
5
B
11
+. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200461970] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Stefan Erhardt
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Strasse, 35039 Marburg, Germany, Fax: (+49) 6421‐282‐5566
| | - Gernot Frenking
- Fachbereich Chemie, Philipps‐Universität Marburg, Hans‐Meerwein‐Strasse, 35039 Marburg, Germany, Fax: (+49) 6421‐282‐5566
| | - Zhongfang Chen
- Department of Chemistry, University of Georgia, Athens, GA, USA, Fax: (+1) 706‐542‐7514
| | | |
Collapse
|
196
|
Erhardt S, Frenking G, Chen Z, Schleyer PVR. Aromatic Boron Wheels with More than One Carbon Atom in the Center: C
2
B
8
, C
3
B
9
3+
, and C
5
B
11
+. Angew Chem Int Ed Engl 2005; 44:1078-1082. [PMID: 15666421 DOI: 10.1002/anie.200461970] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Stefan Erhardt
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35039 Marburg, Germany, Fax: (+49) 6421-282-5566
| | - Gernot Frenking
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35039 Marburg, Germany, Fax: (+49) 6421-282-5566
| | - Zhongfang Chen
- Department of Chemistry, University of Georgia, Athens, GA, USA, Fax: (+1) 706-542-7514
| | | |
Collapse
|
197
|
Li SD, Ren GM, Miao CQ. (M4H3X)2B2O2: Hydrometal Complexes (M = Ni, Mg) Containing Double Tetracoordinate Planar Nonmetal Centers (X = C, N). J Phys Chem A 2004; 109:259-61. [PMID: 16839115 DOI: 10.1021/jp040259u] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Geometrical optimizations and electronic structural analyses of the -O(2)B(2)- bridged hydrometal complexes (M(4)H(3)C)(2)B(2)O(2) and (M(4)H(3)N)(2)B(2)O(2)(2+) (M = Ni, Mg) containing double tetracoordinate planar nonmetals (TPN) have been performed using the density functional theory at the B3LYP/6-311+G(d,p) level. Theoretical evidence of the possibility of double TPN centers coexisting in one planar molecule is presented.
Collapse
Affiliation(s)
- Si-Dian Li
- Department of Chemistry and Institute of Materials Science, Xinzhou Teachers University, Xinzhou 034000, Shanxi, Peoples' Republic of China
| | | | | |
Collapse
|
198
|
Li SD, Miao CQ, Guo JC, Ren GM. Planar Tetra-, Penta-, Hexa-, Hepta-, and Octacoordinate Silicons: A Universal Structural Pattern. J Am Chem Soc 2004; 126:16227-31. [PMID: 15584759 DOI: 10.1021/ja045303y] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A universal structural pattern has been presented at density function theory level to incorporate planar tetra-, penta-, hexa-, hepta-, and octacoordinate silicons in C2v B(n)E2Si series (E = CH, BH, or Si; n = 2-5) and D8h B8Si. The equivalence in valence electron counts and one-to-one correspondence of the delocalized pi and sigma valence orbitals with small boron clusters strongly support the optimized structures containing planar coordinate silicons. Planar B(n)E2Si series are predicted to be aromatic in nature, and the vertical detachment energies of their anions are presented to facilitate future photoelectron experiments. This structural pattern can be applied to form other planar coordinate nonmetals including Ge, P, As, Al, and Ga and needs to be confirmed in experiments to open a new branch of chemistry on planar coordinate main group elements.
Collapse
Affiliation(s)
- Si-Dian Li
- Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, People's Republic of China.
| | | | | | | |
Collapse
|
199
|
Li SD, Ren GM, Miao CQ. Hexacoordinate Planar Main Group Atoms Centered in Hexagonal Hydrocopper Complexes Cu6H6X (X = Si, P, As). Inorg Chem 2004; 43:6331-3. [PMID: 15446880 DOI: 10.1021/ic049623u] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ab initio theoretical evidence of hexacoordinate planar main group atoms centered in hexagonal hydrocopper complexes Cu(6)H(6)X (X = Si, P, As) is presented at the density functional theory level in this work. The results obtained extend the bonding capacity of silicon, phosphorus, and arsenic to planar hexacoordination in hydrocopper complexes which are important in fundamental research and may shed new insight into catalyst chemistry.
Collapse
Affiliation(s)
- Si-Dian Li
- Institute of Materials Sciences and Department of Chemistry, Xinzhou Teachers' University, Xinzhou 034000, Shanxi, P. R. China
| | | | | |
Collapse
|
200
|
Li SD, Miao CQ, Ren GM. D5h Cu5H5X: Pentagonal Hydrocopper Cu5H5 Containing Pentacoordinate Planar Nonmetal Centers (X = B, C, N, O). Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200400223] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|