THE PHENOMENON OF CONGLOMERATE CRYSTALLIZATION. PART 42. THE CRYSTALLIZATION MODE AND CONFORMATIONAL AND CONFIGURATIONAL BEHAVIOR OF MER-TRINITRO COBALT TRIAMINES: [MER-Co(NH₃)₃(NO₂)₃] (I) AND [MER-Co(DPT)(NO₂)₃] (II)

Ivan Bernal Chemistry Department, University of Houston, Houston, Texas, 77204-5641, USA

James Cetrullo Chemistry Department, University of Houston, Houston, Texas, 77204-5641, USA

Fernando Somoza Chemistry Department, University of Houston, Houston, Texas, 77204-5641, USA

John S. Ricci Jr. Chemistry Department, University of South Maine, Portland, Maine, 04103; Chemistry Department, Brookhaven National Laboratory, Upton, NY, 11973, USA

Robert Lewis Chemistry Department, University of South Maine, Portland, Maine, 04103; Chemistry Department, Brookhaven National Laboratory, Upton, NY, 11973, USA

Salah S. Massoud Department of Chemistry, Faculty of Science, Kuwait University, lP.O. Box 5969, Safat, 13060, Kuwait

Abstract

The structure of the fac-[Co(NO₂)₃(NH₃)₃] isomer was determined by B. Nuber, H. Siebert, K. Weidenheimer and J. Weiss, Acta Crystal., B35, 1020 (1979). Interestingly, this isomer also crystallizes in the space group P2₁2₁2₁ (z = 4), but the volume it occupies is only 782.09 Å³, whereas the mer-isomer occupies a volume of 816.09 Å³. Therefore, there is a difference of 34.81 Å³/4 molecules or a volume difference per molecule, of 8.70 Å³. If all other factors are equal, this would argue that crystals of the fac isomer are thermodynamically more stable since its higher density must be a reflection of its Madelung energy.

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THE PHENOMENON OF CONGLOMERATE CRYSTALLIZATION. PART 42. THE CRYSTALLIZATION MODE AND CONFORMATIONAL AND CONFIGURATIONAL BEHAVIOR OF MER-TRINITRO COBALT TRIAMINES: [MER-Co(NH₃)₃(NO₂)₃] (I) AND [MER-Co(DPT)(NO₂)₃] (II)

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THE PHENOMENON OF CONGLOMERATE CRYSTALLIZATION. PART 42. THE CRYSTALLIZATION MODE AND CONFORMATIONAL AND CONFIGURATIONAL BEHAVIOR OF MER-TRINITRO COBALT TRIAMINES: [MER-Co(NH3)3(NO2)3] (I) AND [MER-Co(DPT)(NO2)3] (II)

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THE PHENOMENON OF CONGLOMERATE CRYSTALLIZATION. PART 42. THE CRYSTALLIZATION MODE AND CONFORMATIONAL AND CONFIGURATIONAL BEHAVIOR OF MER-TRINITRO COBALT TRIAMINES: [MER-Co(NH₃)₃(NO₂)₃] (I) AND [MER-Co(DPT)(NO₂)₃] (II)