Rajca Research Group at UNL:Publications

Publications
Last updated: 6/25/2008	Request for Reprints	Citation Reports

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96. Andrzej Rajca, Matthew Vale, Suchada Rajca, “ Diarylnitroxide Diradicals: Low-Temperature Oxidation of Diarylamines to Nitroxides“, J. Am. Chem. Soc., 2008, 130, (Web Release Date: June 25, 2008) DOI: 10.1021/ja8016335.
95. Shuzhang Xiao, Maren Pink, Hua Wang, Suchada Rajca, Andrzej Rajca, “Chiral Tetrathienylene: Synthesis and X-ray Structure“ J. Sulfur Chem., 2008, 29, 425 -432 (invited article in the special issue on Extreme Sulfur Chemistry) DOI: 10.1080/17415990802027263.
94. Hideo Sato, Velavan Kathirvelu, Gaëlle Spagnol, Suchada Rajca, Andrzej Rajca, Sandra S. Eaton, and Gareth R. Eaton “Impact of electron-electron spin interaction on electron spin relaxation of nitroxide diradicals and tetraradical in glassy solvents between 10 and 300 K“ J. Phys. Chem. B, 2008, 112, 2818 -2828 (Web Release Date: 20-Feb-2008), DOI: 10.1021/jp073600u
93. Matthew Vale, Maren Pink, Suchada Rajca, Andrzej Rajca, “Synthesis, Structure, and Conformation of Aza[1_n]metacyclophanes“, J. Org. Chem. (Featured Article), 2008, 73, 27-35 (Web Release Date: December 6, 2007), DOI: 10.1021/jo702151n.

92. Andrzej Rajca, Sumit Mukherjee, Maren Pink, Suchada Rajca, Kausik Das, “1,3-Alternate Calix[4]arene Nitronyl Nitroxide Tetraradical and Diradical: Synthesis, X-ray Crystallography, Paramagnetic NMR Spectroscopy, EPR Spectroscopy, and Magnetic Studies“ Tetrahedron (Symp.-in-Print, New Trends in Calixarene Chemistry), 2007, 63, 10731 - 10742. (Available online 25 July 2007). DOI: 10.1016/j.tet.2007.07.051 [Download]
91. Andrzej Rajca, Masahiro Takahashi, Maren Pink, Gaëlle Spagnol, Suchada Rajca, “Conformationally-Constrained, Stable, Triplet Ground State (S = 1) Nitroxide Diradicals. Antiferromagnetic Chains of S = 1 Diradicals“, J. Am. Chem. Soc., 2007, 129, 10159 - 10170 (Web Release Date: July 27, 2007) DOI: 10.1021/ja0712017.
90. Andrzej Rajca, Suchada Rajca, Maren Pink, Makoto Miyasaka “Annelated, Chiral π-Conjugated Systems: Tetraphenylenes and Helical -Oligothiophenes“, SynLett, 2007,1799 - 1822 (account, invited) [Abstract].
89 Andrzej Rajca, Kouichi Shiraishi, Maren Pink, Suchada Rajca, “Triplet (S = 1) Ground State Aminyl Diradical“ J. Am. Chem. Soc., 2007, 129, 7232 - 7233 (Web Release Date: May 17, 2007), DOI:10.1021/ja071881d
88. Gaëlle Spagnol, Andrzej Rajca, Suchada Rajca, “Efficient Synthesis of Tricyclic Benzobisoxazines by Silica Gel Catalysis“, J. Org. Chem., 2007, 72, 1867 - 1869 (Web Release Date: February 1, 2007), DOI:10.1021/jo062670e.
87. Reyes Malavé Osuna, Rocío Ponce Ortiz, Víctor Hernández, Juan Teodomiro López Navarrete, Makoto Miyasaka, Suchada Rajca, Andrzej Rajca, Rainer Glaser, “Helically Annelated and Cross-Conjugated β-Oligothiophenes: An FT-Raman Spectroscopic and Quantum Chemical DFT Study“, J. Phys. Chem. C., 2007, 111, 4854 - 4860 (Web Release Date: January 18, 2007), DOI:10.1021/jp0677344. [animation]
86. Andrzej Rajca, Makoto Miyasaka, “Synthesis and Characterization of Novel Chiral Conjugated Materials“, In Functional Organic Materials – Syntheses and Strategies, T. J. J. Mueller, U. H. F. Bunz, Eds.; Wiley-VCH, 2007, Chapter 15, 543-577 [Download]

85. Andrzej Rajca, Sumit Mukherjee, Maren Pink, Suchada Rajca, “Exchange Coupling Mediated Through-Bonds and Through-Space in Conformationally-Constrained Polyradical Scaffolds: Calix[4]arene Nitroxide Tetraradicals and Diradical“, J. Am. Chem. Soc., 2006, 128, 13497 - 13507 (Web Release Date: September 23, 2006), DOI:10.1021/ja063567+ .
84. Kausik Das, Maren Pink, Suchada Rajca, Andrzej Rajca, “Synthesis and Structure of Nucleoside with π-Conjugated Nitroxide Spin Label Forming a One-Dimensional Ferromagnetic Chain“, J. Am. Chem. Soc., 2006, 128, 5334-5335 (Web Release Date: March 30, 2006), DOI:10.1021/ja060846o.
83. Makoto Miyasaka, Andrzej Rajca, “Synthesis of Dithieno[2,3-b:3′,2′-d]thiophenes-Building Blocks for Cross-Conjugated β-Oligothiophenes“, J. Org. Chem., 2006, 71, 3264-3266 (Web Release Date: March 18, 2006), DOI:10.1021/jo060038f.

81. Makoto Miyasaka, Andrzej Rajca, Maren Pink, Suchada Rajca, “Cross-Conjugated Oligothiophenes Derived from The (C₂S)_n Helix: Asymmetric Synthesis and Structure of Carbon-Sulfur [11]Helicene“, J. Am. Chem. Soc., 2005, 127, 13806-13807 (Web Release Date: September 20, 2005), DOI:10.1021/ja55414c.
80. Gaëlle Spagnol, Kouichi Shiraishi, Suchada Rajca, Andrzej Rajca, “Triplet Ground State (S = 1) Pegylated Bis(aminoxyl) Diradical: Synthesis and the Effect of Water on Magnetic Properties“, Chem. Comm., 2005, 5047-5049 (Published on Web: September 16, 2005), DOI:10.1039/B508094K.
79. Kouichi Shiraishi, Andrzej Rajca, Maren Pink, Suchada Rajca, “π-Conjugated Conjoined Double Helicene via a Sequence of Three Oxidative CC– and NN–Homocouplings”, J. Am. Chem. Soc, 2005, 127, 9312-9313 (Web Release Date: June 8, 2005), DOI:10.1021/ja51521v.
78. Andrzej Rajca, Kouichi Shiraishi, Matthew Vale, Hongxian Han, Suchada Rajca, “Stable Hydrocarbon Diradical, an Analogue of Trimethylenemethane“, J. Am. Chem. Soc, 2005, 127, 9014-9020 (Web Release Date: June 1, 2005), DOI:10.1021/ja052002v.
77. Eiji Fukuzaki, Naoki Takahashi, Shingo Imai, Hiroyuki Nishide, Andrzej Rajca, “Synthesis of Dendritic, Non-Kekulé-, and Nondisjoint-type Triphenylmethanes Terminated with Galvinoxyl Radicals”, Polymer, J., 2005, 37, 284. [Abstract].
76. Andrzej Rajca, “The Physical Organic Chemistry of Very High-Spin Polyradicals”, Adv. Phys. Org. Chem., 2005, 40, 153-199.

75. Andrzej Rajca, Makoto Miyasaka, Maren Pink, Hua Wang and Suchada Rajca, “Helically Annelated and Cross-Conjugated Oligothiophenes: Asymmetric Synthesis, Resolution, and Characterization of a Carbon-Sulfur [7]Helicene”, J. Am. Chem. Soc.,2004, 126, 15211-15222 (Web Release Date: November 2, 2004) DOI:10.1021/ja0462530
74. Makoto Miyasaka, Maren Pink, Andrzej Rajca and Suchada Rajca, “Chiral Molecular Glass: Synthesis and Characterization of Enantiomerically Pure Thiophene-Based [7]Helicene”, Chem. Eur. J., 2004, 10, 6531-6539. (Published Online: 11 Nov 2004) [Abstract]
73. Andrzej Rajca, Jirawat Wongsriratanakula, Suchada Rajca, Ronald L. Cerny, “Organic Spin Clusters: Annelated Macrocyclic Polyarylmethyl Polyradicals and Polymer with Very High-Spin S = 6 - 18”, Chem. Eur. J. , 2004, 10, 3144-3157, (Published Online: April 30, 2004), (VIP) [ Abstract] [Cover Picture]
72. Andrzej Rajca, Jirawat Wongsriratanakul, Suchada Rajca, “Organic Spin Clusters: Macrocyclic-Macrocyclic Polyarylmethyl Polyradicals with Very High-Spin S = 5 - 13”, J. Am. Chem. Soc., 2004, 126, 6608-6626, (Web Release Date: May 8, 2004) DOI:10.1021/ja031549b
71. Suchada Rajca, Andrzej Rajca, Jirawat Wongsriratanakul, Paul Butler, Sungmin Choi, “Organic Spin Clusters. Dendritic-Macrocyclic Polyarylmethyl Polyradical with Very High-Spin of S = 10 and its Derivatives: Synthesis, Magnetic Studies, and Small Angle Neutron Scattering”, J. Am. Chem. Soc., 2004, 126, 6972-6986, (Web Release Date: May 7, 2004) DOI:10.1021/ja031548j
70. Andrzej Rajca, “Organic Polyradical: Magnetic Nanoclusters”, in Encyclopedia of Nanoscience and Nanotechnology, H. S. Nalwa Ed., American Scientific Publishers, 2004, vol. 8 (Ne-P), 285-294.
69. Makoto Miyasaka and Andrzej Rajca, “Synthesis of a Short Carbon-Sulfur Helicene: Pd-Catalyzed Cross-Coupling at the β-Positions of Thiophenes”, Synlett (Cluster Issue, invited) 2004.177-182. [Abstract]

68. Andrzej Rajca, Maren Pink, Teerapat Rojsajjakul, Kan Lu, Hua Wang, and Suchada Rajca, “X-ray Crystallography and Magnetic Studies of a Stable Macrocyclic Tetranitroxide. Intramolecular Dimer of Nitroxides in a Constrained Geometry of the Upper Rim of Calix[4]arene”, J. Am. Chem. Soc., 2003, 125, 8534-8538. DOI:10.1021/ja034115p
67. T.B. Friedman, X. Cao, A. Rajca, H. Wang L.A. Nafie, “Determination of Absolute Configuration in Molecules with hiral Axes by Vibrational Circular Dichroism: A C₂-Symmetric Annelated Heptathiophene and a D₂-Symmetric Dimer of 1,1’-Binapthyl”, J. Phys. Chem. A, 2003, 107, 7692-7696. DOI:10.1021/jp030307v
66. Andrzej Rajca, “Magnetic Polymers”, in Encyclopedia of Polymer Science and Technology, 3 ^rd Ed, (J. I. Kroschwitz, Ed) Wiley, 2003, 6, 721 - 735 (Online Posing Date: October 15, 2002) [Abstract].

65. Andrzej Rajca, “From High-Spin Organic Molecules to Organic Polymers with Magnetic Ordering”, Chem. Eur. J., 2002, 8, 4834-4841 (Concept Article, invited). [Abstract]
64. Roy Shenhar, Hua Wang, Roy E. Hoffman, Limor Frish, Liat Avram, Itamar Willner, Andrzej Rajca, and Mordecai Rabinovitz, “Self-Assembled, Helically Stacked Anionic Aggregates of 2,5,8,11-Tetra-tert-butylcycloocta[1,2,3,4-def;5,6,7,8-d′e′f′] bisbiphenylene, Stabilized by Electrostatic Interactions”, J. Am. Chem. Soc., 2002, 124, 4685-4692. DOI: 10.1021/ja012140u
63. Roy Shenhar, Itamar Willner, Andrzej Rajca, Mordecai Rabinovitz, “Photoejection of Electrons from Cycloocta[1,2,3,4-def;5,6,7,8-d′e′f′]Bisbiphenylene Radical-Anion and Dianion Derivatives: Identification of a Light-Induced Disproportionation”, J. Phys. Chem. A, 2002, 106, 6206-6212. DOI:10.1021/jp014330x
62. A. Rajca, “Organic Spin Clusters, Fractals, and Networks with Very High-Spin”, in Hyper-structured Molecules III, H. Sasabe, Ed., Taylor & Francis, London, 2002, Chapter 3, 46-60.

61. A. Rajca, J. Wongsriratanakul, S. Rajca, " Magnetic Ordering in an Organic Polymer", Science, 2001, 294, 1503. [Introduction to the Magnetism and Materials special issue by I. S. Osborn, "The Attraction of Magnetism"
60. A. Rajca, H. Wang, P. Bolshov, S. Rajca, “Greek Cross Dodecaphenylene: Sparteine-Mediated Asymmetric Synthesis of Chiral D₂-Symmetric π-Conjugated Tetra-o-phenylenes”, Tetrahedron, 2001, 57, 3725-3735 [Abstract] [Download]
59. A. Rajca, “Very High-Spin Organic Polymers”, Polymer News, 2001, 26, 43-47 (Feature Article).
58. A. Rajca, H. Wang, V. Pawitranon, T. J. Brett, J. J. Stezowski, “Synthesis and Structure of Tetrathiophene with a Chiral 1,1′-Binaphthyl Kink”, Chem. Commun., 2001, 1060-061. DOI:10.1039/b007355p.
57. A. Rajca, S. Rajca, J. Wongsriratanakul, C. R. Ross, II, “4,6-Bis-(trifluoromethyl)-N, N′:-di-tert-butyl-1,3-phenylenebis(aminoxyl) and its Bis(trifluoroacetylacetonato)manganese(II) Complex: Synthesis, X-ray Crystallography, and Magnetism”, Polyhedron, 2001, 20, 1669-675. DOI:10.1016/S0277-5387(01)00671-4
56. S. Rajca, A. Rajca, “Polyarylmethyl Polyradicals as Organic Spin Clusters”, J. Solid State Chem., 2001, 159, 460-465. DOI:10.1006/jssc.2001.9179

55. A. Rajca, H. Wang, M. Pink, S. Rajca, “Annelated Heptathiophene: a Fragment of a Carbon-Sulfur Helix”, Angew. Chem. Int. Ed., 2000, 39, 4481. [Abstract]
54. A. Rajca, A. Safronov, S. Rajca, J. Wongsriratanakul “D₂-Symmetric Dimer of 1,1′-Binaphthyl and Its Chiral π-Conjugated Carbodianion”, J. Am. Chem. Soc., 2000, 122, 3351-3357. DOI:10.1021/ja993286k
53. R. E. Hoffman, R. Shenhar, I. Willner, H. E. Bronstein, L. Scott, A. Rajca, M. Rabinovitz, “Heteronuclear editing method for detecting NOE between chemically equivalent protrons: application to polycyclic aromatic hydrocarbons”, Magn. Reson. Chem. 2000, 38, 311-314.
52. A. Rajca, S. Rajca, J. Wongsriratanakul, “Singlet-Triplet Energy Gap in a Cyclophane-Based Diradical with Parallel Exchange Coupling Pathways”, Chem. Commun., 2000, 1021. DOI:10.1039/b001273o

51. A. Rajca, S. Rajca, J. Wongsriratanakul, “Very High-Spin Organic Polymer: π-Conjugated Hydrocarbon Network with Average Spin of S ≥ 40”, J. Am. Chem. Soc., 1999, 121, 6308. DOI:10.1021/ja990881d
50. A. Rajca, K. Lu, S. Rajca, C. Ross, II, “Singlet-triplet bistability in a 1,3-phenylene-based bis(aminoxyl) diradical”, Chem. Commun, 1999, 1249. DOI:10.1039/a901906e
49. A. Rajca, S. Rajca, J. Wongsriratanakul, “Hydrocarbon Polymer Network with Very High-Spin Ground State, S = 15 - 48”, Polym. Prepr. ACS, PMSE, 1999, 189.
48. A. Rajca, “High-Spin Organic Polyradicals”, in Magnetic Properties of Organic Materials, P. Lathti, Ed.; Marcel Dekker, 1999, Chapter 17.

47. A. Rajca, J. Wongsriratanakul, S. Rajca, R. Cerny, “Dendritic-Macrocyclic Very-High-Spin Organic Polyradical with S = 10”, Angew. Chem. Int. Ed., 1998, 37, 1229. [Abstract]
46. A. Rajca, S. Rajca, “Alkyl-Substituted Schlenk Hydrocarbon Diradicals with Triplet and Singlet Ground States in Frozen Solutions”, J. Chem. Soc. Perkin 2, 1998, 1077. DOI:10.1039/a706374a

45. A. Rajca, A. Safronov, S. Rajca, R. Schoemaker, “Double Helical Octaphenylene”, Angew. Chem. Int. Ed., 1997, 36, 488. [Abstract]

44.

J. Org. Chem

1997

10.1021/jo961879x

43. A. Rajca, “Assembling Triarylmethyls into Mesoscopic-Size Polyradicals: How to Maintain Strong Interactions Between Multiple Sites in a Single Molecule?”, in Modular Chemistry, J. Michl, Ed., Kluwer, 1997, p. 193.
42. A. Rajca, “High-Spin Organic Polyradicals as Simple Spin Clusters”, Proceedings from the International Conference on Molecule-Based Magnets, Aug. 1996, Osaka, Japan; Liq. Cryst. Mol. Cryst., 1997, 305, 567.
41. A. Rajca, K. Lu, S. Rajca, “High-Spin Polyarylmethyl Polyradical: Fragment of a Macrocyclic Double-Strand”, J. Am. Chem. Soc., 1997, 119, 10335. DOI:10.1021/ja971493j
40. A. Rajca, J. Wongsriratanakul, S. Rajca, “High-Spin Organic Polyradicals as Spin Clusters: Ferromagnetic Spin Coupling through Biphenyl Unit in Polyarylmethyl Tri-, Penta-, Hepta-, and Hexadecaradicals”, J. Am. Chem. Soc., 1997, 119, 11674. DOI:10.1021/ja972378b

39. A. Rajca, “High-Spin Organic Polyradicals”, Polymer News, 1996, 21, 405 (Feature Article).
38. S. Rajca, S. and A. Rajca, “Dendritic Polyradicals” in Polymeric Materials Encyclopedia, J.C. Salamone, Ed., CRC Press: Boca Raton, FL, 1996, vol. 3 (D - E), 830.
37. A. Rajca, A. Safronov, S. Rajca, C. R. Ross, J. J. Stezowski, “Biphenylene Dimer. Molecular Fragment of a Two-Dimensional Carbon Net and Double-Stranded Polymer”, J. Am. Chem. Soc., 1996, 118, 7272. DOI:10.1021/ja961065y
36. A. Rajca, and S. Rajca, “Intramolecular Antiferromagnetic vs Ferromagnetic Spin Coupling Through the Biphenyl Unit”, J. Am. Chem. Soc., 1996, 118, 8121. DOI:10.1021/ja961045w
35. A. Rajca, “Very-High-Spin Polyradicals”, a chapter in ACS Symposium Series 644, Molecule-Based Magnetic Materials, M. M. Turnbull, T. Sugimoto, L. K. Thompson, Eds.; ACS, Washington, 1996, Chapter 17.

34. A. Rajca, S. Rajca, S. R. Desai, “Macrocyclic π-Conjugated Carbopolyanions and Polyradicals Based upon Calix[4]arene and Calix[3]arene Rings”, J. Am. Chem. Soc., 1995, 117, 806. DOI:10.1021/ja00107a025
33. S. Rajca, A. Rajca, “Novel High-Spin Molecules: π-Conjugated Polyradical Polyanions. Ferromagnetic Spin Coupling and Electron Localization”, J.Am. Chem. Soc., 1995, 117, 9172. DOI:10.1021/ja00141a008

32. A. Rajca, S. Rajca, S. R. Desai, “Boron-centred Diradical Dianion: a New Triplet State Molecule”, J. Chem. Soc.,Chem. Commun., 1995, 1957. DOI:10.1039/C39950001957

31. A. Rajca, “Organic Di-and Polyradicals. From Spin Coupling to Magnetism?”, Chem. Rev., 1994, 94, 871. DOI:10.1021/cr00028a002
30. A. Rajca, “Toward Organic Synthesis of a Nanometer-Size Magnetic Particle”, Adv. Mater., 1994, 6, 605 (Research News).
29. A. Rajca, S. Rajca, R. Padmakumar, “Calixarene-BasedMacrocyclic Nonet (S = 4) Octaradical and Its Acyclic Sextet (S = 5/2) Pentaradical Analogue”, Angew. Chem. Int. Ed., 1994,33, 2091.
28. A. Rajca*, S. Janicki, “Synthesis of Sterically Hindered 1,3-Connected Polyarylmethanes”, J. Org. Chem., 1994, 59, 7099. DOI:10.1021/jo00102a041
27. A. Rajca, R. Padmakumar, D. J. Smithhisler, S. R. Desai, C. R. Ross, J. J. Stezowski, “Synthesis of [1.1.1.1]Metacyclophane Macrocycle”, J. Org. Chem., 1994, 59, 7701. DOI:10.1021/jo00104a027
26. A. Rajca, “High Spin Polyarylmethyl Polyradicals”, in Advances in Dendritic Macromolecules, G. R Newkome, Ed.; JAI Press: Greenwich, 1994, 1, 133.

25. A. Rajca, S. Utamapanya, “Polyarylmethyl Quartet Triradicals and Quintet Tetraradicals”, J. Am. Chem. Soc., 1993, 115, 2396. DOI:10.1021/ja00059a039
24. A. Rajca, S. Utamapanya, “Spin Balls and Spin Barbells: Preparation and Magnetic Studies of S = 7/2 Dendritic Heptaradical and Progress Toward Very High Spin Dendrimers”, Liq. Cryst. Mol. Cryst., 1993, 232, 305.
23. S. Utamapanya, H. Kakegawa, L. Bryant, A. Rajca, “High-Spin Polymers Synthesis of 1,3-Connected Polyarylmethane and its Carbopolyanion and Polyradical”, Chem. Mater., 1993, 5, 1053. DOI:10.1021/cm00032a00
22. A. Rajca, S. Utamapanya, D. J. Smithhisler, “Near-Degeneracy Between the Low- and High-Spin Ground States in an Alternant Hydrocarbon Diradical: Topology and Geometry”, J. Org. Chem., 1993, 5, 5650. DOI:10.1021/jo00073a024
21. A. Rajca, S. Utamapanya, “Toward Organic Synthesis of a Magnetic Particle: Dendritic Polyradicals with 15 and 31 Centers for Unpaired Electrons”, J. Am. Chem. Soc., 1993, 115, 10688. DOI:10.1021/ja00076a029

20. A. Rajca, S. Utamapanya, S. Thayumanavan, “Polyarylmethyl Octet (S = 7/2) Heptaradical and Undecet (S = 5) Decaradical”, J. Am. Chem. Soc., 1992, 114, 1884. DOI:10.1021/ja00031a055
19. A. Rajca, S. Utamapanya, “π-Conjugated Systems with Unique Electronic Structure: A Case of “Planarized” 1,3-Connected Polyarylmethyl carbodianion and Stable Triplet Hydrocarbon Diradical”, J. Org. Chem., 1992, 57, 1760. DOI:10.1021/jo00032a030

18. A. Rajca, “Synthesis of 1,3-Connected Polyarylmethanes”, J. Org. Chem., 1991, 56, 2557. DOI:10.1021/jo00007a054
17. A. Rajca, S. Utamapanya, J. Xu, “Control of Magnetic Interactions in Polyarylmethyl Triplet Diradicals Using Steric Hindrance”, J. Am. Chem. Soc., 1991, 113, 9235. DOI:10.1021/ja00024a032
16. S. Utamapanya, A. Rajca, “Topological Control of Electron Localization in π-Conjugated Polyarylmethyl Carbopolyanions and Radical Anions”, J. Am. Chem. Soc., 1991, 113, 9242. DOI:10.1021/ja00024a033

15. A. Rajca, “A Polyarylmethyl Carbotetraanion”, J. Am. Chem. Soc., 1990, 112, 5889. DOI:10.1021/ja00171a044
14. A. Rajca, “A Polyarylmethyl Quintet Tetraradical”, J. Am. Chem. Soc., 1990, 112, 5890. DOI:10.1021/ja00171a045

13. A. Rajca, P. Wang, A. Streitwieser, Jr., P. v. R. Schleyer, “Dilithiosilanes and Disodiosilanes. Ionicity of the Silicon-Metal Bond”, Inorg. Chem., 1989, 28, 3064.
12. A. Rajca, K. H. Lee, “Ab Initio Study of Destabilized π-Conjugated Systems with Large π-Overlap: Sulfur Trimethylene and Chlorine Trimethylene Cation. Electrostatics as a Dominant Factor in Multiple Bonding for Second Row Elements”, J. Am. Chem. Soc., 1989, 111, 4166.

11. A. Rajca, A. Streitwieser, Jr., “Ab Initio Study of 2-Silallyl Cation and Anion. Some Attributes of Si-Containing π-Conjugated Systems”, Organometallics, 1988, 7, 2215.
10. A. Rajca, L. M. Tolbert, “π-Conjugated Dianions. A ¹³C NMR Study”, J. Am. Chem. Soc., 1988, 110, 871.

9. A. Rajca and L. M. Tolbert, “How Does an Allene Distort to Accommodate Negative Charge. The 1,1,3,3-Tetraphenylallene System”, J. Am. Chem. Soc., 1987, 109, 1782.
8. A. Rajca, A. Streitwieser, Jr., and L. M. Tolbert, “Ab Initio Study of 2,3-Dilithiopropene”, J. Am. Chem. Soc., 1987, 109, 1790.
7. A. Streitwieser, Jr., A. Rajca, R. S. McDowell, R. Glaser, “Semipolar P-O and P-C Bonds. Theoretical Study of Hypophosphite and Related Methylenephosphoranes”, J. Am. Chem. Soc., 1987, 109, 4184.
6. A. Rajca, J. Rice, A. Streitwieser, Jr., H. F. Schaefer III, “Methaphosphate and Trismethylenemethaphosphate (P(CH₂)₃^-) Anions. Do They Have Three Double Bonds to Phosphorus?” J. Am. Chem. Soc., 1987, 109, 4189.

5. A. Rajca, D. Grobelny, S. Witek, “Cleavage of 1,3-Oxathiol-2-one Ring with n-Butyllithium. New Route to Alkynyl Thiolates”, Monatshefte Chem., 1985, 116, 1363.
4. A. Rajca and L. M. Tolbert, “Tris(diphenylmethylene)methane Dianion. Direct Evidence for π-Aromaticity”, J. Am. Chem. Soc., 1985, 107, 698.
3. A. Rajca and L. M. Tolbert, “Structure of Dilithium Tetraphenylallenide”, J. Am. Chem. Soc., 1985, 107, 2969.
2. L. M. Tolbert and A. Rajca, “6,6-Dimethyl-2,4-diphenylcyclohexadienyl Anion and the Failure of Carbanion Homoaromaticity”, J. Org. Chem., 1985, 50, 4805.

1. A. Rajca, D. Grobelny, S. Witek, M. Zbirovsky, “5-Aryl-2-oxo-1,2,4-oxathiazolones as Cyclocarbonylating Agent for 2-Aminoalcohols and 1,2-Diamines”, Synthesis, 1983, 103.