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Crystals 2017, 7(10), 318; doi:10.3390/cryst7100318

Binuclear Copper(I) Borohydride Complex Containing Bridging Bis(diphenylphosphino) Methane Ligands: Polymorphic Structures of [(µ2-dppm)2Cu22-BH4)2] Dichloromethane Solvate

1
A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 119991 Moscow, Russia
2
Inorganic Chemistry Department, Peoples’ Friendship University of Russia (RUDN University), 117198 Moscow, Russia
3
Institute of Problems of Chemical Physics, Russian Academy of Sciences (IPCP RAS), 142432 Moscow, Russia
4
Istituto di Chimica dei Composti Organometallici Consiglio Nazionale delle Ricerche (ICCOM CNR), 50019 Sesto Fiorentino, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Sławomir J. Grabowski
Received: 18 September 2017 / Revised: 13 October 2017 / Accepted: 17 October 2017 / Published: 20 October 2017
(This article belongs to the Special Issue Crystal Structures of Boron Compounds)
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Abstract

Bis(diphenylphosphino)methane copper(I) tetrahydroborate was synthesized by ligands exchange in bis(triphenylphosphine) copper(I) tetrahydroborate, and characterized by XRD, FTIR, NMR spectroscopy. According to XRD the title compound has dimeric structure, [(μ2-dppm)2Cu22-BH4)2], and crystallizes as CH2Cl2 solvate in two polymorphic forms (orthorhombic, 1, and monoclinic, 2) The details of molecular geometry and the crystal-packing pattern in polymorphs were studied. The rare Twisted Boat-Boat conformation of the core Cu2P4C2 cycle in 1 is found being more stable than Boat-Boat conformation in 2. View Full-Text
Keywords: copper(I); diphosphine; dppm ligand; tetrahydroborate; binuclear complex; crystal structure; conformations; polymorph; hydride-halogen bonding copper(I); diphosphine; dppm ligand; tetrahydroborate; binuclear complex; crystal structure; conformations; polymorph; hydride-halogen bonding
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Belkova, N.V.; Golub, I.E.; Gutsul, E.I.; Lyssenko, K.A.; Peregudov, A.S.; Makhaev, V.D.; Filippov, O.A.; Epstein, L.M.; Rossin, A.; Peruzzini, M.; Shubina, E.S. Binuclear Copper(I) Borohydride Complex Containing Bridging Bis(diphenylphosphino) Methane Ligands: Polymorphic Structures of [(µ2-dppm)2Cu22-BH4)2] Dichloromethane Solvate. Crystals 2017, 7, 318.

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