Syntheses and crystal structures of the tetrakis(methyltrihydroborato) compounds of zirconium(IV), thorium(IV), uranium(IV), and neptunium(IV)

Journal Article · Wed Aug 17 04:00:00 EDT 1983 · Inorg. Chem.; (United States)

DOI:https://doi.org/10.1021/ic00159a003· OSTI ID:5398720

Shinomoto, R; Gamp, E; Edelstein, N M; Templeton, D H; Zalkin, A

Zr(BH/sub 3/CH/sub 3/)/sub 4/, Th(BH/sub 3/CH/sub 3/)/sub 4/, U(BH/sub 3/CH/sub 3/)/sub 4/, and Np(BH/sub 3/CH/sub 3/)/sub 4/ have been synthesized and their molecular structures determined by single-crystal x-ray diffraction. Infrared spectroscopy and nuclear magnetic resonance data are presented for the Zr, Th, and U compounds. The space groups, unit cell parameters, and R factors are as follows: Zr(BH/sub 3/CH/sub 3/)/sub 4/, tetragonal, P4/sub 2//n, a = 10.311 (6) A, c = 5.851 (3) A, Z = 2, d/sub x/ = 1.103 g/cm/sup 3/, R = 0.013 (F/sup 2/ > 3sigma(F/sup 2/)); Th(BH/sub 3/CH/sub 3/)/sub 4/, triclinic, P1, a = 18.408 (6) A, b = 16.910 (6) A, c = 8.834 (3) A, ..cap alpha.. = 88.06 (4)/sup 0/, ..beta.. = 90.83 (4) /sup 0/, ..gamma.. = 88.08 (4)/sup 0/, Z = 8, d/sub x/ = 1.681 g/cm/sup 3/, R = 0.068 (F/sup 2/ > 3sigma(F/sup 2/)); U(BH/sub 3/CH/sub 3/)/sub 4/, monoclinic, P2/sub 1/n, a = 18.228 (6) A, b = 16.749 (6) A, c = 8.765 (2) A, ..beta.. = 90.69 (4)/sup 0/, Z = 8, d/sub x/ = 1.755 g/cm/sup 3/, R = 0.041 (F/sup 2/ > 3sigma(F/sup 2/)); Np(BH/sub 3/CH/sub 3/)/sub 4/, tetragonal, P4/sub 2//n, a = 10.552 (6) A, c = 5.950 (3) A, Z = 2, d/sub x/ = 1.767 g/cm/sup 3/, R = 0.016 (F/sup 2/ > 3sigma(F/sup 2/)). All compounds are monomolecular in the crystalline state. The metal atoms are tetrahedrally coordinated to the four BH/sub 3/CH/sub 3/ groups through tridentate hydrogen bridges. The M-B distances are 2.335 +- 0.003 A for Zr, 2.56 +- 0.05 A for Th, 2.49 +- 0.02 A for U, and 2.487 +- 0.006 A for Np. 17 references, 3 figures, 5 tables.

• Research Organization: Univ. of California, Berkeley
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5398720
• Journal Information: Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 22:17; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
BOND LENGTHS
BOROHYDRIDES
BORON COMPOUNDS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DATA
DIFFRACTION
DIMENSIONS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
INFRARED SPECTRA
LATTICE PARAMETERS
LENGTH
MAGNETIC RESONANCE
MOLECULAR STRUCTURE
NEPTUNIUM COMPOUNDS
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
RESONANCE
SCATTERING
SPECTRA
SYNTHESIS
THORIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSURANIUM COMPOUNDS
URANIUM COMPOUNDS
X-RAY DIFFRACTION
ZIRCONIUM COMPOUNDS