T. P. Fehlner, S. Ed-;-ghosh, B. C. Noll, and T. P. Fehlner, Inorganometallic Chemistry; Plenum: New York, 1992. (b), Borane Mimics of Classic Organometallic Compounds, vol.0, issue.B8H14, p.1

, Isoelectronic Analogues of Dinuclear Pentalene Complexes

S. Ghosh, B. C. Noll, T. P. Fehlner, S. K. Bose, K. Geetharani et al., Expansion of iridaborane clusters by addition of monoborane. Novel metallaboranes and mechanistic detail, Dalton Trans, vol.44, pp.1081-1124, 1993.

M. J. Carr, A. Franken, R. Macías, and J. D. Xiedy, Twelve-vertex polyhedral carbaborane chemistry. Isostructural cations and anions: The 'globule-globule

. Polyhedron, T. J. Carter, R. Mohtadi, T. S. Arthur, F. Mizuno et al., Metallacarboranes as labile anions for ionic zirconocene olefin polymerization catalysts, Polyhedral Boranes for Medical Applications: Current Status and Perspectives, vol.25, pp.1433-1450, 1989.

F. Issa, M. Kassiou, L. M. Rendina, H. M. Davies, D. Morton et al., Boron in drug discovery: carboranes as unique pharmacophores in biologically active compounds, Small Carborane Ligands as Tailorable Cp Surrogates, vol.111, pp.2300-2301, 2004.

J. M. Russell, M. Sabat, R. N. Grimes, and R. N. Grimes, Organotransition-Metal Metallacarboranes. 59. 1 Synthesis and Linkage of Boron-Functionalized Ferracarborane Clusters, Halogenation, Alkylation, and Arylation at Metal and Cage Positions on CpX2M(Et2C2B4H4) Complexes (M = Ta, Nb), vol.19, pp.4113-4128, 2000.

E. W. Abel, F. G. Stone, G. Wilkinson, . Eds, T. Peymann et al., Oxidative Perhydroxylation of [closo-B12H12] 2? to the Stable Inorganic Cluster Redox System [B12(OH)12] 2?/? : Experiment and Theory, Angew. Chem. Int. Ed, vol.1, issue.7, pp.11242-11245, 1995.

M. A. Benvenuto, M. Sabat, and R. N. Grimes, Organotransition-metal metallacarboranes. 29. Synthesis of selectively C-and B-substituted double-and triple-decker sandwiches, vol.34, p.5, 1995.

. Co, H. Yao, R. N. Grimes, K. B. Gilbert, S. K. Boocock et al., Small cobaltacarborane clusters in synthesis. Peralkylation, perhalogenation, and macrocycle construction, Comprehensive Organometallic Chemistry. In Compounds with Bonds between a Transition Metal, vol.31, issue.9, pp.51-60, 1992.

G. Wilkinson, F. G. Stone, and . Abel,

S. K. Bose, K. Geetharani, and S. Ghosh, C-H activation of arenes and heteroarenes by early transition metallaborane, Cp*Ta)2B5H11] (Cp* = ? 5 -C5Me5), vol.6, pp.879-945, 1982.

, Chem. Commun, vol.47, pp.11996-11998, 2011.

M. F. Hawthorne, C. A. Reed, . Carboranes, and S. H. Strauss, The Role of Chemistry in the Development of Boron Neutron Capture Therapy of Cancer, Catalyst-Free Polyhydroboration of Dodecaborate Yields Highly Photoluminescent Ionic Polyarylated Clusters, vol.32, p.927, 1993.

M. S. Messina, J. C. Axtell, Y. Wang, P. Chong, A. I. Wixtrom et al., Visible-Light-Induced Olefin Activation Using 3D Aromatic Boron-Rich Cluster Photooxidants, Spokoyny, A. M. Luminescent Metal Complexes Featuring Photophysically Innocent Strong-Field Chelating Boron Cluster Ligands, vol.56, pp.5132-5138, 2016.

M. F. Hawthorne and A. Maderna, Applications of Radiolabeled Boron Clusters to the Diagnosis and Treatment of Cancer, Chem. Rev, vol.99, pp.3421-3434, 1999.

E. A. Qian, A. I. Wixtrom, J. C. Axtell, A. Saebi, D. Jung et al., Atomically precise organomimetic cluster nanomolecules assembled via perfluoroaryl-thiol SNAr chemistry, Nat. Chem, vol.9, pp.333-340, 2017.

K. Kim, C. A. Reed, D. W. Elliot, L. J. Mueller, F. Tham et al., Crystallographic Evidence for a Free Silylium Ion, Science, vol.297, pp.825-827, 2002.

R. D. Bolskar, R. S. Mathur, and C. A. Reed, Synthesis and Isolation of a Fullerene Carbocation (C76 + ), J. Am. Chem. Soc, vol.118, pp.13093-13094, 1996.

Z. Xie, R. Bau, and C. A. Reed, A Crystalline [H9O4] + Hydronium Ion Salt with a Weakly Coordinating Anion, Inorg. Chem, vol.34, pp.5403-5404, 1995.

Z. Xie, R. Bau, C. A. Reed, X. Zhang, and H. Yan, + Cation: A New Concept in the Search for the Least Coordinating Anion, Angew. Chem. Int. Ed, vol.33, issue.19, pp.2433-2434, 1995.

R. Cheng, Z. Qiu, Z. Xie, X. Zhang, H. Zheng et al., Selective Catalytic B-H Arylation of o-Carboranyl Aldehydes by a Transient Directing Strategy, J. Am. Chem. Soc, vol.8, issue.20, pp.14511-14517, 2017.

C. Li, H. Zhang, T. Wong, H. Cao, H. Yan et al., Palladium-Catalyzed Selective Mono-/Tetraacetoxylation of o-Carboranes with Acetic Acid via Cross Dehydrogenative Coupling of Cage B?H/O?H Bonds, Coord. Chem. Rev, vol.19, issue.21, pp.733-744, 2015.

L. Guennic, H. Jiao, S. Kahlal, J. Saillard, J. Halet et al., Synthesis and Characterization of Hypoelectronic Rhenaboranes. Analysis of the Geometric and Electronic Structures of Species Following Neither Borane nor Metal Cluster Electron-Counting Paradigms, J. Am. Chem. Soc, vol.126, issue.24, pp.209-223, 1992.

W. H. Knoth, H. C. Miller, J. C. Sauer, J. H. Balthis, Y. T. Chia et al., Chem. Rev, vol.91, pp.35-48, 1991.

R. S. Dhayal, S. Sahoo, V. Ramkumar, S. Ghosh, K. Geetharani et al., Substitution at Boron in Molybdaborane Frameworks: Synthesis and Characterization of Isomeric (? 5 -C5Me5Mo)2B5HnXm (when X = Cl: n = 5, 7, 8; m = 4, 2, 1 and X = Me: n = 6, 7; m = 3, 2), Cp*TaX)2B5H11] (X = Cl, vol.3, pp.9976-9985, 1964.

, Pure Appl. Chem, vol.87, pp.195-204, 2015.

R. Prakash, K. Bakthavachalam, B. Varghese, and S. Ghosh, Chlorination of the terminal hydrogen atoms in the hydrogen-rich group 5 dimetallaboranes (Cp*M)2(B2H6)2 (M = Nb, Ta), J. Organomet. Chem, vol.846, pp.372-378, 2017.

S. K. Bose, K. Geetharani, V. Ramkumar, S. M. Mobin, S. Ghosh et al., Tuning of Metallaborane Geometries: Chemistry of Metallaboranes of Early Transition Metals Derived from Metal Halides and Monoborane Reagents, Chem. Eur. J, vol.15, issue.29, pp.926-933, 1964.

E. Klumpp, G. Bor, L. Marko, and V. Schwefelhaltige-metallcarbonyle, Reaktionen von Dikobaltoctacarbonyl mit Thiophenol und Thiophenolderivaten, Chem. Ber, vol.100, pp.1451-1458, 1967.

N. Schulenberg, . Ciobanu, E. Kaifer, . Wadepohl, and H. Himmel, ]pyrimidinate): Synthesis by Catalytic Dehydrogenation and Reactions with S8 and Disulfides, Eur. J. Inorg. Chem, pp.5201-5210, 2010.

S. K. Bose, K. Geetharani, V. Ramkumar, B. Varghese, and S. Ghosh, Chemistry of Vanadaboranes: Synthesis, Structures, and Characterization of Organovanadium Sulfide Clusters with Disulfido Linkage, Inorg. Chem, vol.49, issue.32, pp.2881-2888, 2010.

S. Sahoo, K. H. Reddy, R. S. Dhayal, S. M. Mobin, V. Ramkumar et al., Chlorinated Hypoelectronic Dimetallaborane Clusters: Synthesis, Characterization and Electronic Structures of (? 5 -C5Me5W)2B5HnClm (n = 7, m = 2 and n = 8, m = 1), Inorg. Chem, vol.41, pp.6509-6516, 2002.

C. D. Abernethy, F. Bottomley, and A. Decken, Organometallic Halides: Preparation and Physical and Chemical Properties of Tris

G. E. Ryschkewitsch, K. C. Nainan, and . Octahydrotriborate,

[. B3h8]-salt and . Inorg, Gesmar, H. Application of the linear predictionmethod to NMR-spectroscopy, Chem. Rev, vol.91, pp.1413-1426, 1991.

L. Yang, R. Simionescu, A. Lough, H. Yan, R. Weiss et al., Sources of Line Width in Boron-11 Nuclear Magnetic Resonance Spectra. Scalar Relaxation and Boron-Boron Coupling in B4H10 and B5H9, J. Am. Chem. Soc, vol.100, pp.1401-1405, 1978.

S. Apex2 and . Sadabs,

A. Bruker and G. M. Sheldrick, SHELXS-97; University of Go?ttingen: Go?ttingen, Germany, 1997. (b) Sheldrick, G. M. Crystal structure refinement with SHELXL, Acta Crystallogr., Sect. C: Struct. Chem, vol.71, issue.37, pp.3-8, 2004.

O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. Howard, H. Puschmann et al., J. Appl. Crystallogr, vol.42, issue.39, pp.339-341, 2009.

H. L. Schmider, A. D. Becke, E. D. Glendening, A. E. Reed, J. E. Carpenter et al., Weinhold, F. Intermolecular interactions from a natural bond orbital, donor-acceptor viewpoint, J. Chem. Phys, vol.108, issue.41, pp.899-926, 1988.

F. Weinhold and R. Landis, Valency and bonding: A natural bond orbital donor-acceptor perspective, 2005.

T. Lu and F. Chen, Multiwfn: A multifunctional wavefunction analyser, J. Comput. Chem, vol.33, pp.580-592, 2012.

I. I. Gaussview-;-dennington, R. T. Keith, J. Millam, K. Eppinnett, W. L. Hovell et al., , 2003.

G. A. Zhurko,